Home / 20,440,426.65-28,200,665.82-13,102,306.08

Finding the Fourth Proportional to 20,440,426.65, 28,200,665.82 and 13,102,306.08

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Solution

The fourth proportional to 20,440,426.65, 28,200,665.82 and 13,102,306.08 is: 18,076,616.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440,426.65 : 28,200,665.82 = 13,102,306.08 : x
  2. Step 2: Convert to fraction form
    20,440,426.65/28,200,665.82 = 13,102,306.08/x
  3. Step 3: Cross multiply
    20,440,426.65x = 28,200,665.82 × 13,102,306.08
  4. Step 4: Simplify right side
    20,440,426.65x = 369,493,755,233,434.19
  5. Step 5: Solve for x
    x = 369,493,755,233,434.19/20,440,426.65
  6. Step 6: Final answer
    x = 18,076,616.58

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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.