Home / 15,259.29-21,057.16-8,543.78

Finding the Fourth Proportional to 15,259.29, 21,057.16 and 8,543.78

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Solution

The fourth proportional to 15,259.29, 21,057.16 and 8,543.78 is: 11,790.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,259.29 : 21,057.16 = 8,543.78 : x
  2. Step 2: Convert to fraction form
    15,259.29/21,057.16 = 8,543.78/x
  3. Step 3: Cross multiply
    15,259.29x = 21,057.16 × 8,543.78
  4. Step 4: Simplify right side
    15,259.29x = 179,907,742.46
  5. Step 5: Solve for x
    x = 179,907,742.46/15,259.29
  6. Step 6: Final answer
    x = 11,790.05

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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.