Home / 28,434.64-39,241.56-15,687.76

Finding the Fourth Proportional to 28,434.64, 39,241.56 and 15,687.76

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Solution

The fourth proportional to 28,434.64, 39,241.56 and 15,687.76 is: 21,650.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.64 : 39,241.56 = 15,687.76 : x
  2. Step 2: Convert to fraction form
    28,434.64/39,241.56 = 15,687.76/x
  3. Step 3: Cross multiply
    28,434.64x = 39,241.56 × 15,687.76
  4. Step 4: Simplify right side
    28,434.64x = 615,612,175.31
  5. Step 5: Solve for x
    x = 615,612,175.31/28,434.64
  6. Step 6: Final answer
    x = 21,650.08

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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.