Home / 21,680.60-32,483.10-9,969.80

Finding the Fourth Proportional to 21,680.60, 32,483.10 and 9,969.80

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Solution

The fourth proportional to 21,680.60, 32,483.10 and 9,969.80 is: 14,937.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.60 : 32,483.10 = 9,969.80 : x
  2. Step 2: Convert to fraction form
    21,680.60/32,483.10 = 9,969.80/x
  3. Step 3: Cross multiply
    21,680.60x = 32,483.10 × 9,969.80
  4. Step 4: Simplify right side
    21,680.60x = 323,850,010.38
  5. Step 5: Solve for x
    x = 323,850,010.38/21,680.60
  6. Step 6: Final answer
    x = 14,937.32

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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.