Home / 15,545.42-21,435.74-10,500.88

Finding the Fourth Proportional to 15,545.42, 21,435.74 and 10,500.88

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Solution

The fourth proportional to 15,545.42, 21,435.74 and 10,500.88 is: 14,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.42 : 21,435.74 = 10,500.88 : x
  2. Step 2: Convert to fraction form
    15,545.42/21,435.74 = 10,500.88/x
  3. Step 3: Cross multiply
    15,545.42x = 21,435.74 × 10,500.88
  4. Step 4: Simplify right side
    15,545.42x = 225,094,167.22
  5. Step 5: Solve for x
    x = 225,094,167.22/15,545.42
  6. Step 6: Final answer
    x = 14,479.78

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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.