Home / 39,740.79-59,572.31-18,978.87

Finding the Fourth Proportional to 39,740.79, 59,572.31 and 18,978.87

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Solution

The fourth proportional to 39,740.79, 59,572.31 and 18,978.87 is: 28,449.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,740.79 : 59,572.31 = 18,978.87 : x
  2. Step 2: Convert to fraction form
    39,740.79/59,572.31 = 18,978.87/x
  3. Step 3: Cross multiply
    39,740.79x = 59,572.31 × 18,978.87
  4. Step 4: Simplify right side
    39,740.79x = 1,130,615,032.20
  5. Step 5: Solve for x
    x = 1,130,615,032.20/39,740.79
  6. Step 6: Final answer
    x = 28,449.74

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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.