Home / 15,507.64-21,400.77-9,535.78

Finding the Fourth Proportional to 15,507.64, 21,400.77 and 9,535.78

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Solution

The fourth proportional to 15,507.64, 21,400.77 and 9,535.78 is: 13,159.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.64 : 21,400.77 = 9,535.78 : x
  2. Step 2: Convert to fraction form
    15,507.64/21,400.77 = 9,535.78/x
  3. Step 3: Cross multiply
    15,507.64x = 21,400.77 × 9,535.78
  4. Step 4: Simplify right side
    15,507.64x = 204,073,034.55
  5. Step 5: Solve for x
    x = 204,073,034.55/15,507.64
  6. Step 6: Final answer
    x = 13,159.52

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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.