Home / 15,698,863.40-21,659,560.38-9,167,781.56

Finding the Fourth Proportional to 15,698,863.40, 21,659,560.38 and 9,167,781.56

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Solution

The fourth proportional to 15,698,863.40, 21,659,560.38 and 9,167,781.56 is: 12,648,693.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,698,863.40 : 21,659,560.38 = 9,167,781.56 : x
  2. Step 2: Convert to fraction form
    15,698,863.40/21,659,560.38 = 9,167,781.56/x
  3. Step 3: Cross multiply
    15,698,863.40x = 21,659,560.38 × 9,167,781.56
  4. Step 4: Simplify right side
    15,698,863.40x = 198,570,118,141,172.78
  5. Step 5: Solve for x
    x = 198,570,118,141,172.78/15,698,863.40
  6. Step 6: Final answer
    x = 12,648,693.93

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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.