Home / 31,406.40-47,095.20-13,867.20

Finding the Fourth Proportional to 31,406.40, 47,095.20 and 13,867.20

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Solution

The fourth proportional to 31,406.40, 47,095.20 and 13,867.20 is: 20,794.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406.40 : 47,095.20 = 13,867.20 : x
  2. Step 2: Convert to fraction form
    31,406.40/47,095.20 = 13,867.20/x
  3. Step 3: Cross multiply
    31,406.40x = 47,095.20 × 13,867.20
  4. Step 4: Simplify right side
    31,406.40x = 653,078,557.44
  5. Step 5: Solve for x
    x = 653,078,557.44/31,406.40
  6. Step 6: Final answer
    x = 20,794.44

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1.5x scale

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.