Home / 20,521,658.28-28,313,011.98-11,819,656.68

Finding the Fourth Proportional to 20,521,658.28, 28,313,011.98 and 11,819,656.68

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Solution

The fourth proportional to 20,521,658.28, 28,313,011.98 and 11,819,656.68 is: 16,307,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521,658.28 : 28,313,011.98 = 11,819,656.68 : x
  2. Step 2: Convert to fraction form
    20,521,658.28/28,313,011.98 = 11,819,656.68/x
  3. Step 3: Cross multiply
    20,521,658.28x = 28,313,011.98 × 11,819,656.68
  4. Step 4: Simplify right side
    20,521,658.28x = 334,650,081,180,327
  5. Step 5: Solve for x
    x = 334,650,081,180,327/20,521,658.28
  6. Step 6: Final answer
    x = 16,307,165.66

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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.