Home / 35,285.60-48,695.28-20,172.80

Finding the Fourth Proportional to 35,285.60, 48,695.28 and 20,172.80

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Solution

The fourth proportional to 35,285.60, 48,695.28 and 20,172.80 is: 27,839.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,285.60 : 48,695.28 = 20,172.80 : x
  2. Step 2: Convert to fraction form
    35,285.60/48,695.28 = 20,172.80/x
  3. Step 3: Cross multiply
    35,285.60x = 48,695.28 × 20,172.80
  4. Step 4: Simplify right side
    35,285.60x = 982,320,144.38
  5. Step 5: Solve for x
    x = 982,320,144.38/35,285.60
  6. Step 6: Final answer
    x = 27,839.12

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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.