Home / 40,917.40-61,376.10-13,218.20

Finding the Fourth Proportional to 40,917.40, 61,376.10 and 13,218.20

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Solution

The fourth proportional to 40,917.40, 61,376.10 and 13,218.20 is: 19,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,917.40 : 61,376.10 = 13,218.20 : x
  2. Step 2: Convert to fraction form
    40,917.40/61,376.10 = 13,218.20/x
  3. Step 3: Cross multiply
    40,917.40x = 61,376.10 × 13,218.20
  4. Step 4: Simplify right side
    40,917.40x = 811,281,565.02
  5. Step 5: Solve for x
    x = 811,281,565.02/40,917.40
  6. Step 6: Final answer
    x = 19,827.30

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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.