Home / 21,309,666.40-31,969,165.20-8,526,959.20

Finding the Fourth Proportional to 21,309,666.40, 31,969,165.20 and 8,526,959.20

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Solution

The fourth proportional to 21,309,666.40, 31,969,165.20 and 8,526,959.20 is: 12,792,305.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,666.40 : 31,969,165.20 = 8,526,959.20 : x
  2. Step 2: Convert to fraction form
    21,309,666.40/31,969,165.20 = 8,526,959.20/x
  3. Step 3: Cross multiply
    21,309,666.40x = 31,969,165.20 × 8,526,959.20
  4. Step 4: Simplify right side
    21,309,666.40x = 272,599,767,318,459.81
  5. Step 5: Solve for x
    x = 272,599,767,318,459.81/21,309,666.40
  6. Step 6: Final answer
    x = 12,792,305.72

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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.