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Finding the Fourth Proportional to 15,054.76, 20,776.14 and 8,340.24

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Solution

The fourth proportional to 15,054.76, 20,776.14 and 8,340.24 is: 11,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.76 : 20,776.14 = 8,340.24 : x
  2. Step 2: Convert to fraction form
    15,054.76/20,776.14 = 8,340.24/x
  3. Step 3: Cross multiply
    15,054.76x = 20,776.14 × 8,340.24
  4. Step 4: Simplify right side
    15,054.76x = 173,277,993.87
  5. Step 5: Solve for x
    x = 173,277,993.87/15,054.76
  6. Step 6: Final answer
    x = 11,509.85

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Half scale
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Double scale
Find fourth proportional to 15,055.76, 20,777.52 and 8,341.24
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.