Home / 15,490,949.68-21,377,785.44-8,615,434.78

Finding the Fourth Proportional to 15,490,949.68, 21,377,785.44 and 8,615,434.78

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Solution

The fourth proportional to 15,490,949.68, 21,377,785.44 and 8,615,434.78 is: 11,889,452.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490,949.68 : 21,377,785.44 = 8,615,434.78 : x
  2. Step 2: Convert to fraction form
    15,490,949.68/21,377,785.44 = 8,615,434.78/x
  3. Step 3: Cross multiply
    15,490,949.68x = 21,377,785.44 × 8,615,434.78
  4. Step 4: Simplify right side
    15,490,949.68x = 184,178,916,199,153.59
  5. Step 5: Solve for x
    x = 184,178,916,199,153.59/15,490,949.68
  6. Step 6: Final answer
    x = 11,889,452.87

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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.