Home / 28,634.31-39,515.46-15,887.76

Finding the Fourth Proportional to 28,634.31, 39,515.46 and 15,887.76

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Solution

The fourth proportional to 28,634.31, 39,515.46 and 15,887.76 is: 21,925.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,634.31 : 39,515.46 = 15,887.76 : x
  2. Step 2: Convert to fraction form
    28,634.31/39,515.46 = 15,887.76/x
  3. Step 3: Cross multiply
    28,634.31x = 39,515.46 × 15,887.76
  4. Step 4: Simplify right side
    28,634.31x = 627,812,144.77
  5. Step 5: Solve for x
    x = 627,812,144.77/28,634.31
  6. Step 6: Final answer
    x = 21,925.17

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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.