Home / 15,931,270.62-21,988,635.17-10,128,919.05

Finding the Fourth Proportional to 15,931,270.62, 21,988,635.17 and 10,128,919.05

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Solution

The fourth proportional to 15,931,270.62, 21,988,635.17 and 10,128,919.05 is: 13,980,121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931,270.62 : 21,988,635.17 = 10,128,919.05 : x
  2. Step 2: Convert to fraction form
    15,931,270.62/21,988,635.17 = 10,128,919.05/x
  3. Step 3: Cross multiply
    15,931,270.62x = 21,988,635.17 × 10,128,919.05
  4. Step 4: Simplify right side
    15,931,270.62x = 222,721,105,606,268.41
  5. Step 5: Solve for x
    x = 222,721,105,606,268.41/15,931,270.62
  6. Step 6: Final answer
    x = 13,980,121.92

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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.