Home / 31,424,862.20-43,386,234.28-21,518,322.64

Finding the Fourth Proportional to 31,424,862.20, 43,386,234.28 and 21,518,322.64

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Solution

The fourth proportional to 31,424,862.20, 43,386,234.28 and 21,518,322.64 is: 29,708,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424,862.20 : 43,386,234.28 = 21,518,322.64 : x
  2. Step 2: Convert to fraction form
    31,424,862.20/43,386,234.28 = 21,518,322.64/x
  3. Step 3: Cross multiply
    31,424,862.20x = 43,386,234.28 × 21,518,322.64
  4. Step 4: Simplify right side
    31,424,862.20x = 933,598,987,426,337.88
  5. Step 5: Solve for x
    x = 933,598,987,426,337.88/31,424,862.20
  6. Step 6: Final answer
    x = 29,708,928.60

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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.