Home / 28,143.50-38,839.26-15,568.26

Finding the Fourth Proportional to 28,143.50, 38,839.26 and 15,568.26

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Solution

The fourth proportional to 28,143.50, 38,839.26 and 15,568.26 is: 21,484.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.50 : 38,839.26 = 15,568.26 : x
  2. Step 2: Convert to fraction form
    28,143.50/38,839.26 = 15,568.26/x
  3. Step 3: Cross multiply
    28,143.50x = 38,839.26 × 15,568.26
  4. Step 4: Simplify right side
    28,143.50x = 604,659,697.89
  5. Step 5: Solve for x
    x = 604,659,697.89/28,143.50
  6. Step 6: Final answer
    x = 21,484.88

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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.