Home / 20,763.90-28,654.20-14,805.95

Finding the Fourth Proportional to 20,763.90, 28,654.20 and 14,805.95

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Solution

The fourth proportional to 20,763.90, 28,654.20 and 14,805.95 is: 20,432.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.90 : 28,654.20 = 14,805.95 : x
  2. Step 2: Convert to fraction form
    20,763.90/28,654.20 = 14,805.95/x
  3. Step 3: Cross multiply
    20,763.90x = 28,654.20 × 14,805.95
  4. Step 4: Simplify right side
    20,763.90x = 424,252,509.22
  5. Step 5: Solve for x
    x = 424,252,509.22/20,763.90
  6. Step 6: Final answer
    x = 20,432.22

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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.