Home / 42,937.61-64,417.40-13,355.70

Finding the Fourth Proportional to 42,937.61, 64,417.40 and 13,355.70

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Solution

The fourth proportional to 42,937.61, 64,417.40 and 13,355.70 is: 20,036.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,937.61 : 64,417.40 = 13,355.70 : x
  2. Step 2: Convert to fraction form
    42,937.61/64,417.40 = 13,355.70/x
  3. Step 3: Cross multiply
    42,937.61x = 64,417.40 × 13,355.70
  4. Step 4: Simplify right side
    42,937.61x = 860,339,402.40
  5. Step 5: Solve for x
    x = 860,339,402.40/42,937.61
  6. Step 6: Final answer
    x = 20,036.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.