Home / 21,008.74-31,519.29-6,218.05

Finding the Fourth Proportional to 21,008.74, 31,519.29 and 6,218.05

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Solution

The fourth proportional to 21,008.74, 31,519.29 and 6,218.05 is: 9,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.74 : 31,519.29 = 6,218.05 : x
  2. Step 2: Convert to fraction form
    21,008.74/31,519.29 = 6,218.05/x
  3. Step 3: Cross multiply
    21,008.74x = 31,519.29 × 6,218.05
  4. Step 4: Simplify right side
    21,008.74x = 195,988,521.18
  5. Step 5: Solve for x
    x = 195,988,521.18/21,008.74
  6. Step 6: Final answer
    x = 9,328.90

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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.