Home / 21,167,806.60-31,760,004.30-8,386,136.20

Finding the Fourth Proportional to 21,167,806.60, 31,760,004.30 and 8,386,136.20

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Solution

The fourth proportional to 21,167,806.60, 31,760,004.30 and 8,386,136.20 is: 12,582,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167,806.60 : 31,760,004.30 = 8,386,136.20 : x
  2. Step 2: Convert to fraction form
    21,167,806.60/31,760,004.30 = 8,386,136.20/x
  3. Step 3: Cross multiply
    21,167,806.60x = 31,760,004.30 × 8,386,136.20
  4. Step 4: Simplify right side
    21,167,806.60x = 266,343,721,772,385.69
  5. Step 5: Solve for x
    x = 266,343,721,772,385.69/21,167,806.60
  6. Step 6: Final answer
    x = 12,582,490.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.