Home / 15,863,188.88-21,891,147-8,988,981.32

Finding the Fourth Proportional to 15,863,188.88, 21,891,147 and 8,988,981.32

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Solution

The fourth proportional to 15,863,188.88, 21,891,147 and 8,988,981.32 is: 12,404,763.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,863,188.88 : 21,891,147 = 8,988,981.32 : x
  2. Step 2: Convert to fraction form
    15,863,188.88/21,891,147 = 8,988,981.32/x
  3. Step 3: Cross multiply
    15,863,188.88x = 21,891,147 × 8,988,981.32
  4. Step 4: Simplify right side
    15,863,188.88x = 196,779,111,456,374.03
  5. Step 5: Solve for x
    x = 196,779,111,456,374.03/15,863,188.88
  6. Step 6: Final answer
    x = 12,404,763.82

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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.