Home / 20,985,882.17-28,960,576.13-12,167,047.21

Finding the Fourth Proportional to 20,985,882.17, 28,960,576.13 and 12,167,047.21

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Solution

The fourth proportional to 20,985,882.17, 28,960,576.13 and 12,167,047.21 is: 16,790,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985,882.17 : 28,960,576.13 = 12,167,047.21 : x
  2. Step 2: Convert to fraction form
    20,985,882.17/28,960,576.13 = 12,167,047.21/x
  3. Step 3: Cross multiply
    20,985,882.17x = 28,960,576.13 × 12,167,047.21
  4. Step 4: Simplify right side
    20,985,882.17x = 352,364,696,946,374.56
  5. Step 5: Solve for x
    x = 352,364,696,946,374.56/20,985,882.17
  6. Step 6: Final answer
    x = 16,790,559.20

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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.