Home / 20,771,288.14-28,665,475.02-12,513,949.80

Finding the Fourth Proportional to 20,771,288.14, 28,665,475.02 and 12,513,949.80

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Solution

The fourth proportional to 20,771,288.14, 28,665,475.02 and 12,513,949.80 is: 17,269,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,288.14 : 28,665,475.02 = 12,513,949.80 : x
  2. Step 2: Convert to fraction form
    20,771,288.14/28,665,475.02 = 12,513,949.80/x
  3. Step 3: Cross multiply
    20,771,288.14x = 28,665,475.02 × 12,513,949.80
  4. Step 4: Simplify right side
    20,771,288.14x = 358,718,315,393,434
  5. Step 5: Solve for x
    x = 358,718,315,393,434/20,771,288.14
  6. Step 6: Final answer
    x = 17,269,911.86

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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.