Home / 39,697.20-59,551.10-20,978.02

Finding the Fourth Proportional to 39,697.20, 59,551.10 and 20,978.02

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Solution

The fourth proportional to 39,697.20, 59,551.10 and 20,978.02 is: 31,469.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,697.20 : 59,551.10 = 20,978.02 : x
  2. Step 2: Convert to fraction form
    39,697.20/59,551.10 = 20,978.02/x
  3. Step 3: Cross multiply
    39,697.20x = 59,551.10 × 20,978.02
  4. Step 4: Simplify right side
    39,697.20x = 1,249,264,166.82
  5. Step 5: Solve for x
    x = 1,249,264,166.82/39,697.20
  6. Step 6: Final answer
    x = 31,469.83

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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.