Home / 20,740.77-31,098.65-8,262.72

Finding the Fourth Proportional to 20,740.77, 31,098.65 and 8,262.72

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Solution

The fourth proportional to 20,740.77, 31,098.65 and 8,262.72 is: 12,389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.77 : 31,098.65 = 8,262.72 : x
  2. Step 2: Convert to fraction form
    20,740.77/31,098.65 = 8,262.72/x
  3. Step 3: Cross multiply
    20,740.77x = 31,098.65 × 8,262.72
  4. Step 4: Simplify right side
    20,740.77x = 256,959,396.01
  5. Step 5: Solve for x
    x = 256,959,396.01/20,740.77
  6. Step 6: Final answer
    x = 12,389.10

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1.5x scale

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.