Home / 28,065.72-38,727.12-15,801.24

Finding the Fourth Proportional to 28,065.72, 38,727.12 and 15,801.24

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Solution

The fourth proportional to 28,065.72, 38,727.12 and 15,801.24 is: 21,803.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.72 : 38,727.12 = 15,801.24 : x
  2. Step 2: Convert to fraction form
    28,065.72/38,727.12 = 15,801.24/x
  3. Step 3: Cross multiply
    28,065.72x = 38,727.12 × 15,801.24
  4. Step 4: Simplify right side
    28,065.72x = 611,936,517.63
  5. Step 5: Solve for x
    x = 611,936,517.63/28,065.72
  6. Step 6: Final answer
    x = 21,803.70

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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.