Home / 21,306,559.20-29,403,052.72-11,516,971.28

Finding the Fourth Proportional to 21,306,559.20, 29,403,052.72 and 11,516,971.28

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Solution

The fourth proportional to 21,306,559.20, 29,403,052.72 and 11,516,971.28 is: 15,893,420.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306,559.20 : 29,403,052.72 = 11,516,971.28 : x
  2. Step 2: Convert to fraction form
    21,306,559.20/29,403,052.72 = 11,516,971.28/x
  3. Step 3: Cross multiply
    21,306,559.20x = 29,403,052.72 × 11,516,971.28
  4. Step 4: Simplify right side
    21,306,559.20x = 338,634,113,720,565.88
  5. Step 5: Solve for x
    x = 338,634,113,720,565.88/21,306,559.20
  6. Step 6: Final answer
    x = 15,893,420.92

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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.