Home / 20,730,011.70-28,616,590.51-13,391,423.84

Finding the Fourth Proportional to 20,730,011.70, 28,616,590.51 and 13,391,423.84

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Solution

The fourth proportional to 20,730,011.70, 28,616,590.51 and 13,391,423.84 is: 18,486,091.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,011.70 : 28,616,590.51 = 13,391,423.84 : x
  2. Step 2: Convert to fraction form
    20,730,011.70/28,616,590.51 = 13,391,423.84/x
  3. Step 3: Cross multiply
    20,730,011.70x = 28,616,590.51 × 13,391,423.84
  4. Step 4: Simplify right side
    20,730,011.70x = 383,216,892,375,131.75
  5. Step 5: Solve for x
    x = 383,216,892,375,131.75/20,730,011.70
  6. Step 6: Final answer
    x = 18,486,091.47

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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.