Home / 35,420.68-53,152.89-20,658.43

Finding the Fourth Proportional to 35,420.68, 53,152.89 and 20,658.43

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Solution

The fourth proportional to 35,420.68, 53,152.89 and 20,658.43 is: 31,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,420.68 : 53,152.89 = 20,658.43 : x
  2. Step 2: Convert to fraction form
    35,420.68/53,152.89 = 20,658.43/x
  3. Step 3: Cross multiply
    35,420.68x = 53,152.89 × 20,658.43
  4. Step 4: Simplify right side
    35,420.68x = 1,098,055,257.36
  5. Step 5: Solve for x
    x = 1,098,055,257.36/35,420.68
  6. Step 6: Final answer
    x = 31,000.40

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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.