Home / 21,235,146.73-31,697,695.45-18,221,876.26

Finding the Fourth Proportional to 21,235,146.73, 31,697,695.45 and 18,221,876.26

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Solution

The fourth proportional to 21,235,146.73, 31,697,695.45 and 18,221,876.26 is: 27,199,787.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235,146.73 : 31,697,695.45 = 18,221,876.26 : x
  2. Step 2: Convert to fraction form
    21,235,146.73/31,697,695.45 = 18,221,876.26/x
  3. Step 3: Cross multiply
    21,235,146.73x = 31,697,695.45 × 18,221,876.26
  4. Step 4: Simplify right side
    21,235,146.73x = 577,591,484,217,065
  5. Step 5: Solve for x
    x = 577,591,484,217,065/21,235,146.73
  6. Step 6: Final answer
    x = 27,199,787.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.