Home / 21,167,807.60-31,760,005.80-8,386,137.20

Finding the Fourth Proportional to 21,167,807.60, 31,760,005.80 and 8,386,137.20

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Solution

The fourth proportional to 21,167,807.60, 31,760,005.80 and 8,386,137.20 is: 12,582,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167,807.60 : 31,760,005.80 = 8,386,137.20 : x
  2. Step 2: Convert to fraction form
    21,167,807.60/31,760,005.80 = 8,386,137.20/x
  3. Step 3: Cross multiply
    21,167,807.60x = 31,760,005.80 × 8,386,137.20
  4. Step 4: Simplify right side
    21,167,807.60x = 266,343,766,111,595.78
  5. Step 5: Solve for x
    x = 266,343,766,111,595.78/21,167,807.60
  6. Step 6: Final answer
    x = 12,582,491.83

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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.