Home / 15,257.16-21,055.82-8,543.21

Finding the Fourth Proportional to 15,257.16, 21,055.82 and 8,543.21

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Solution

The fourth proportional to 15,257.16, 21,055.82 and 8,543.21 is: 11,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,257.16 : 21,055.82 = 8,543.21 : x
  2. Step 2: Convert to fraction form
    15,257.16/21,055.82 = 8,543.21/x
  3. Step 3: Cross multiply
    15,257.16x = 21,055.82 × 8,543.21
  4. Step 4: Simplify right side
    15,257.16x = 179,884,143.99
  5. Step 5: Solve for x
    x = 179,884,143.99/15,257.16
  6. Step 6: Final answer
    x = 11,790.15

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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.