Home / 15,297,332.28-21,109,909.14-8,421,865.98

Finding the Fourth Proportional to 15,297,332.28, 21,109,909.14 and 8,421,865.98

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Solution

The fourth proportional to 15,297,332.28, 21,109,909.14 and 8,421,865.98 is: 11,621,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297,332.28 : 21,109,909.14 = 8,421,865.98 : x
  2. Step 2: Convert to fraction form
    15,297,332.28/21,109,909.14 = 8,421,865.98/x
  3. Step 3: Cross multiply
    15,297,332.28x = 21,109,909.14 × 8,421,865.98
  4. Step 4: Simplify right side
    15,297,332.28x = 177,784,825,627,057.06
  5. Step 5: Solve for x
    x = 177,784,825,627,057.06/15,297,332.28
  6. Step 6: Final answer
    x = 11,621,949.66

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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.