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Finding the Fourth Proportional to 15,054.64, 20,775.12 and 8,340.12

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Solution

The fourth proportional to 15,054.64, 20,775.12 and 8,340.12 is: 11,509.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.64 : 20,775.12 = 8,340.12 : x
  2. Step 2: Convert to fraction form
    15,054.64/20,775.12 = 8,340.12/x
  3. Step 3: Cross multiply
    15,054.64x = 20,775.12 × 8,340.12
  4. Step 4: Simplify right side
    15,054.64x = 173,266,993.81
  5. Step 5: Solve for x
    x = 173,266,993.81/15,054.64
  6. Step 6: Final answer
    x = 11,509.21

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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.