Home / 20,569.90-30,830.12-9,461.28

Finding the Fourth Proportional to 20,569.90, 30,830.12 and 9,461.28

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Solution

The fourth proportional to 20,569.90, 30,830.12 and 9,461.28 is: 14,180.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.90 : 30,830.12 = 9,461.28 : x
  2. Step 2: Convert to fraction form
    20,569.90/30,830.12 = 9,461.28/x
  3. Step 3: Cross multiply
    20,569.90x = 30,830.12 × 9,461.28
  4. Step 4: Simplify right side
    20,569.90x = 291,692,397.75
  5. Step 5: Solve for x
    x = 291,692,397.75/20,569.90
  6. Step 6: Final answer
    x = 14,180.55

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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.