Home / 31,164.30-42,996.60-18,417.86

Finding the Fourth Proportional to 31,164.30, 42,996.60 and 18,417.86

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Solution

The fourth proportional to 31,164.30, 42,996.60 and 18,417.86 is: 25,410.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,164.30 : 42,996.60 = 18,417.86 : x
  2. Step 2: Convert to fraction form
    31,164.30/42,996.60 = 18,417.86/x
  3. Step 3: Cross multiply
    31,164.30x = 42,996.60 × 18,417.86
  4. Step 4: Simplify right side
    31,164.30x = 791,905,359.28
  5. Step 5: Solve for x
    x = 791,905,359.28/31,164.30
  6. Step 6: Final answer
    x = 25,410.66

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1.5x scale

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.