Home / 21,123,123.40-31,752,336.30-19,625,465.80

Finding the Fourth Proportional to 21,123,123.40, 31,752,336.30 and 19,625,465.80

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Solution

The fourth proportional to 21,123,123.40, 31,752,336.30 and 19,625,465.80 is: 29,501,053.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123,123.40 : 31,752,336.30 = 19,625,465.80 : x
  2. Step 2: Convert to fraction form
    21,123,123.40/31,752,336.30 = 19,625,465.80/x
  3. Step 3: Cross multiply
    21,123,123.40x = 31,752,336.30 × 19,625,465.80
  4. Step 4: Simplify right side
    21,123,123.40x = 623,154,390,125,748.62
  5. Step 5: Solve for x
    x = 623,154,390,125,748.62/21,123,123.40
  6. Step 6: Final answer
    x = 29,501,053.34

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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.