Home / 39,607.20-59,405.40-11,905.20

Finding the Fourth Proportional to 39,607.20, 59,405.40 and 11,905.20

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Solution

The fourth proportional to 39,607.20, 59,405.40 and 11,905.20 is: 17,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,607.20 : 59,405.40 = 11,905.20 : x
  2. Step 2: Convert to fraction form
    39,607.20/59,405.40 = 11,905.20/x
  3. Step 3: Cross multiply
    39,607.20x = 59,405.40 × 11,905.20
  4. Step 4: Simplify right side
    39,607.20x = 707,233,168.08
  5. Step 5: Solve for x
    x = 707,233,168.08/39,607.20
  6. Step 6: Final answer
    x = 17,856.18

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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.