Home / 31,424,865.18-43,386,238.38-21,518,325.62

Finding the Fourth Proportional to 31,424,865.18, 43,386,238.38 and 21,518,325.62

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Solution

The fourth proportional to 31,424,865.18, 43,386,238.38 and 21,518,325.62 is: 29,708,932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424,865.18 : 43,386,238.38 = 21,518,325.62 : x
  2. Step 2: Convert to fraction form
    31,424,865.18/43,386,238.38 = 21,518,325.62/x
  3. Step 3: Cross multiply
    31,424,865.18x = 43,386,238.38 × 21,518,325.62
  4. Step 4: Simplify right side
    31,424,865.18x = 933,599,204,887,781.38
  5. Step 5: Solve for x
    x = 933,599,204,887,781.38/31,424,865.18
  6. Step 6: Final answer
    x = 29,708,932.70

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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.