Home / 21,174,490.40-31,785,355.20-19,786,838.90

Finding the Fourth Proportional to 21,174,490.40, 31,785,355.20 and 19,786,838.90

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Solution

The fourth proportional to 21,174,490.40, 31,785,355.20 and 19,786,838.90 is: 29,702,330.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174,490.40 : 31,785,355.20 = 19,786,838.90 : x
  2. Step 2: Convert to fraction form
    21,174,490.40/31,785,355.20 = 19,786,838.90/x
  3. Step 3: Cross multiply
    21,174,490.40x = 31,785,355.20 × 19,786,838.90
  4. Step 4: Simplify right side
    21,174,490.40x = 628,931,702,721,677.25
  5. Step 5: Solve for x
    x = 628,931,702,721,677.25/21,174,490.40
  6. Step 6: Final answer
    x = 29,702,330.06

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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.