Home / 31,271.60-43,154.50-16,931.36

Finding the Fourth Proportional to 31,271.60, 43,154.50 and 16,931.36

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Solution

The fourth proportional to 31,271.60, 43,154.50 and 16,931.36 is: 23,365.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,271.60 : 43,154.50 = 16,931.36 : x
  2. Step 2: Convert to fraction form
    31,271.60/43,154.50 = 16,931.36/x
  3. Step 3: Cross multiply
    31,271.60x = 43,154.50 × 16,931.36
  4. Step 4: Simplify right side
    31,271.60x = 730,664,375.12
  5. Step 5: Solve for x
    x = 730,664,375.12/31,271.60
  6. Step 6: Final answer
    x = 23,365.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.