Home / 35,445.60-53,151.48-20,658.78

Finding the Fourth Proportional to 35,445.60, 53,151.48 and 20,658.78

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Solution

The fourth proportional to 35,445.60, 53,151.48 and 20,658.78 is: 30,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,445.60 : 53,151.48 = 20,658.78 : x
  2. Step 2: Convert to fraction form
    35,445.60/53,151.48 = 20,658.78/x
  3. Step 3: Cross multiply
    35,445.60x = 53,151.48 × 20,658.78
  4. Step 4: Simplify right side
    35,445.60x = 1,098,044,731.99
  5. Step 5: Solve for x
    x = 1,098,044,731.99/35,445.60
  6. Step 6: Final answer
    x = 30,978.31

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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.