Home / 42,387.60-63,581.40-12,802.35

Finding the Fourth Proportional to 42,387.60, 63,581.40 and 12,802.35

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Solution

The fourth proportional to 42,387.60, 63,581.40 and 12,802.35 is: 19,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,387.60 : 63,581.40 = 12,802.35 : x
  2. Step 2: Convert to fraction form
    42,387.60/63,581.40 = 12,802.35/x
  3. Step 3: Cross multiply
    42,387.60x = 63,581.40 × 12,802.35
  4. Step 4: Simplify right side
    42,387.60x = 813,991,336.29
  5. Step 5: Solve for x
    x = 813,991,336.29/42,387.60
  6. Step 6: Final answer
    x = 19,203.53

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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.