Home / 28,729.31-39,643.59-17,972.10

Finding the Fourth Proportional to 28,729.31, 39,643.59 and 17,972.10

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Solution

The fourth proportional to 28,729.31, 39,643.59 and 17,972.10 is: 24,799.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.31 : 39,643.59 = 17,972.10 : x
  2. Step 2: Convert to fraction form
    28,729.31/39,643.59 = 17,972.10/x
  3. Step 3: Cross multiply
    28,729.31x = 39,643.59 × 17,972.10
  4. Step 4: Simplify right side
    28,729.31x = 712,478,631.23
  5. Step 5: Solve for x
    x = 712,478,631.23/28,729.31
  6. Step 6: Final answer
    x = 24,799.72

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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.