Home / 28,572.32-39,426-15,996.80

Finding the Fourth Proportional to 28,572.32, 39,426 and 15,996.80

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Solution

The fourth proportional to 28,572.32, 39,426 and 15,996.80 is: 22,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.32 : 39,426 = 15,996.80 : x
  2. Step 2: Convert to fraction form
    28,572.32/39,426 = 15,996.80/x
  3. Step 3: Cross multiply
    28,572.32x = 39,426 × 15,996.80
  4. Step 4: Simplify right side
    28,572.32x = 630,689,836.80
  5. Step 5: Solve for x
    x = 630,689,836.80/28,572.32
  6. Step 6: Final answer
    x = 22,073.46

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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.