Home / 21,042,545.40-31,563,818.10-20,412,689.40

Finding the Fourth Proportional to 21,042,545.40, 31,563,818.10 and 20,412,689.40

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Solution

The fourth proportional to 21,042,545.40, 31,563,818.10 and 20,412,689.40 is: 30,619,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042,545.40 : 31,563,818.10 = 20,412,689.40 : x
  2. Step 2: Convert to fraction form
    21,042,545.40/31,563,818.10 = 20,412,689.40/x
  3. Step 3: Cross multiply
    21,042,545.40x = 31,563,818.10 × 20,412,689.40
  4. Step 4: Simplify right side
    21,042,545.40x = 644,302,415,153,398.12
  5. Step 5: Solve for x
    x = 644,302,415,153,398.12/21,042,545.40
  6. Step 6: Final answer
    x = 30,619,034.10

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1.5x scale

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.