Home / 42,319.80-63,495.90-18,929.43

Finding the Fourth Proportional to 42,319.80, 63,495.90 and 18,929.43

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Solution

The fourth proportional to 42,319.80, 63,495.90 and 18,929.43 is: 28,401.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,319.80 : 63,495.90 = 18,929.43 : x
  2. Step 2: Convert to fraction form
    42,319.80/63,495.90 = 18,929.43/x
  3. Step 3: Cross multiply
    42,319.80x = 63,495.90 × 18,929.43
  4. Step 4: Simplify right side
    42,319.80x = 1,201,941,194.34
  5. Step 5: Solve for x
    x = 1,201,941,194.34/42,319.80
  6. Step 6: Final answer
    x = 28,401.39

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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.