Home / 15,543.87-21,453.86-10,239.15

Finding the Fourth Proportional to 15,543.87, 21,453.86 and 10,239.15

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Solution

The fourth proportional to 15,543.87, 21,453.86 and 10,239.15 is: 14,132.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.87 : 21,453.86 = 10,239.15 : x
  2. Step 2: Convert to fraction form
    15,543.87/21,453.86 = 10,239.15/x
  3. Step 3: Cross multiply
    15,543.87x = 21,453.86 × 10,239.15
  4. Step 4: Simplify right side
    15,543.87x = 219,669,239.42
  5. Step 5: Solve for x
    x = 219,669,239.42/15,543.87
  6. Step 6: Final answer
    x = 14,132.21

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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.