Home / 20,967.23-31,451.17-5,384.51

Finding the Fourth Proportional to 20,967.23, 31,451.17 and 5,384.51

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Solution

The fourth proportional to 20,967.23, 31,451.17 and 5,384.51 is: 8,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.23 : 31,451.17 = 5,384.51 : x
  2. Step 2: Convert to fraction form
    20,967.23/31,451.17 = 5,384.51/x
  3. Step 3: Cross multiply
    20,967.23x = 31,451.17 × 5,384.51
  4. Step 4: Simplify right side
    20,967.23x = 169,349,139.38
  5. Step 5: Solve for x
    x = 169,349,139.38/20,967.23
  6. Step 6: Final answer
    x = 8,076.85

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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.