Home / 31,612.80-47,389.68-15,808.08

Finding the Fourth Proportional to 31,612.80, 47,389.68 and 15,808.08

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Solution

The fourth proportional to 31,612.80, 47,389.68 and 15,808.08 is: 23,697.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,612.80 : 47,389.68 = 15,808.08 : x
  2. Step 2: Convert to fraction form
    31,612.80/47,389.68 = 15,808.08/x
  3. Step 3: Cross multiply
    31,612.80x = 47,389.68 × 15,808.08
  4. Step 4: Simplify right side
    31,612.80x = 749,139,852.61
  5. Step 5: Solve for x
    x = 749,139,852.61/31,612.80
  6. Step 6: Final answer
    x = 23,697.36

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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.