Home / 15,718,421.21-21,691,422.28-8,748,948.73

Finding the Fourth Proportional to 15,718,421.21, 21,691,422.28 and 8,748,948.73

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Solution

The fourth proportional to 15,718,421.21, 21,691,422.28 and 8,748,948.73 is: 12,073,549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,718,421.21 : 21,691,422.28 = 8,748,948.73 : x
  2. Step 2: Convert to fraction form
    15,718,421.21/21,691,422.28 = 8,748,948.73/x
  3. Step 3: Cross multiply
    15,718,421.21x = 21,691,422.28 × 8,748,948.73
  4. Step 4: Simplify right side
    15,718,421.21x = 189,777,141,364,754.97
  5. Step 5: Solve for x
    x = 189,777,141,364,754.97/15,718,421.21
  6. Step 6: Final answer
    x = 12,073,549.80

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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.