Home / 28,085.40-38,757.42-15,510.84

Finding the Fourth Proportional to 28,085.40, 38,757.42 and 15,510.84

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Solution

The fourth proportional to 28,085.40, 38,757.42 and 15,510.84 is: 21,404.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.40 : 38,757.42 = 15,510.84 : x
  2. Step 2: Convert to fraction form
    28,085.40/38,757.42 = 15,510.84/x
  3. Step 3: Cross multiply
    28,085.40x = 38,757.42 × 15,510.84
  4. Step 4: Simplify right side
    28,085.40x = 601,160,140.43
  5. Step 5: Solve for x
    x = 601,160,140.43/28,085.40
  6. Step 6: Final answer
    x = 21,404.72

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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.