Home / 15,312.32-21,131.03-8,600.13

Finding the Fourth Proportional to 15,312.32, 21,131.03 and 8,600.13

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Solution

The fourth proportional to 15,312.32, 21,131.03 and 8,600.13 is: 11,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.32 : 21,131.03 = 8,600.13 : x
  2. Step 2: Convert to fraction form
    15,312.32/21,131.03 = 8,600.13/x
  3. Step 3: Cross multiply
    15,312.32x = 21,131.03 × 8,600.13
  4. Step 4: Simplify right side
    15,312.32x = 181,729,562.03
  5. Step 5: Solve for x
    x = 181,729,562.03/15,312.32
  6. Step 6: Final answer
    x = 11,868.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.