Home / 21,517,686.40-29,681,140.08-13,141,126.48

Finding the Fourth Proportional to 21,517,686.40, 29,681,140.08 and 13,141,126.48

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Solution

The fourth proportional to 21,517,686.40, 29,681,140.08 and 13,141,126.48 is: 18,126,652.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517,686.40 : 29,681,140.08 = 13,141,126.48 : x
  2. Step 2: Convert to fraction form
    21,517,686.40/29,681,140.08 = 13,141,126.48/x
  3. Step 3: Cross multiply
    21,517,686.40x = 29,681,140.08 × 13,141,126.48
  4. Step 4: Simplify right side
    21,517,686.40x = 390,043,615,861,877.31
  5. Step 5: Solve for x
    x = 390,043,615,861,877.31/21,517,686.40
  6. Step 6: Final answer
    x = 18,126,652.12

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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.