Home / 28,161.24-38,864.48-15,586.80

Finding the Fourth Proportional to 28,161.24, 38,864.48 and 15,586.80

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Solution

The fourth proportional to 28,161.24, 38,864.48 and 15,586.80 is: 21,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.24 : 38,864.48 = 15,586.80 : x
  2. Step 2: Convert to fraction form
    28,161.24/38,864.48 = 15,586.80/x
  3. Step 3: Cross multiply
    28,161.24x = 38,864.48 × 15,586.80
  4. Step 4: Simplify right side
    28,161.24x = 605,772,876.86
  5. Step 5: Solve for x
    x = 605,772,876.86/28,161.24
  6. Step 6: Final answer
    x = 21,510.87

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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.