Home / 28,258.05-38,997.18-15,685.23

Finding the Fourth Proportional to 28,258.05, 38,997.18 and 15,685.23

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Solution

The fourth proportional to 28,258.05, 38,997.18 and 15,685.23 is: 21,646.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.05 : 38,997.18 = 15,685.23 : x
  2. Step 2: Convert to fraction form
    28,258.05/38,997.18 = 15,685.23/x
  3. Step 3: Cross multiply
    28,258.05x = 38,997.18 × 15,685.23
  4. Step 4: Simplify right side
    28,258.05x = 611,679,737.65
  5. Step 5: Solve for x
    x = 611,679,737.65/28,258.05
  6. Step 6: Final answer
    x = 21,646.21

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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.