Home / 28,689.07-39,592.10-15,942.20

Finding the Fourth Proportional to 28,689.07, 39,592.10 and 15,942.20

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Solution

The fourth proportional to 28,689.07, 39,592.10 and 15,942.20 is: 22,000.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,689.07 : 39,592.10 = 15,942.20 : x
  2. Step 2: Convert to fraction form
    28,689.07/39,592.10 = 15,942.20/x
  3. Step 3: Cross multiply
    28,689.07x = 39,592.10 × 15,942.20
  4. Step 4: Simplify right side
    28,689.07x = 631,185,077.64
  5. Step 5: Solve for x
    x = 631,185,077.64/28,689.07
  6. Step 6: Final answer
    x = 22,000.89

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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.