Home / 31,424,863.17-43,386,235.62-21,518,323.61

Finding the Fourth Proportional to 31,424,863.17, 43,386,235.62 and 21,518,323.61

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Solution

The fourth proportional to 31,424,863.17, 43,386,235.62 and 21,518,323.61 is: 29,708,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424,863.17 : 43,386,235.62 = 21,518,323.61 : x
  2. Step 2: Convert to fraction form
    31,424,863.17/43,386,235.62 = 21,518,323.61/x
  3. Step 3: Cross multiply
    31,424,863.17x = 43,386,235.62 × 21,518,323.61
  4. Step 4: Simplify right side
    31,424,863.17x = 933,599,058,290,868.88
  5. Step 5: Solve for x
    x = 933,599,058,290,868.88/31,424,863.17
  6. Step 6: Final answer
    x = 29,708,929.94

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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.