Home / 20,490.95-30,718.19-8,008.13

Finding the Fourth Proportional to 20,490.95, 30,718.19 and 8,008.13

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Solution

The fourth proportional to 20,490.95, 30,718.19 and 8,008.13 is: 12,005.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.95 : 30,718.19 = 8,008.13 : x
  2. Step 2: Convert to fraction form
    20,490.95/30,718.19 = 8,008.13/x
  3. Step 3: Cross multiply
    20,490.95x = 30,718.19 × 8,008.13
  4. Step 4: Simplify right side
    20,490.95x = 245,995,218.84
  5. Step 5: Solve for x
    x = 245,995,218.84/20,490.95
  6. Step 6: Final answer
    x = 12,005.07

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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.