Home / 15,184.66-20,955.35-8,810.76

Finding the Fourth Proportional to 15,184.66, 20,955.35 and 8,810.76

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Solution

The fourth proportional to 15,184.66, 20,955.35 and 8,810.76 is: 12,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.66 : 20,955.35 = 8,810.76 : x
  2. Step 2: Convert to fraction form
    15,184.66/20,955.35 = 8,810.76/x
  3. Step 3: Cross multiply
    15,184.66x = 20,955.35 × 8,810.76
  4. Step 4: Simplify right side
    15,184.66x = 184,632,559.57
  5. Step 5: Solve for x
    x = 184,632,559.57/15,184.66
  6. Step 6: Final answer
    x = 12,159.15

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Half scale
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Double scale
Find fourth proportional to 15,185.66, 20,956.73 and 8,811.76
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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.