Home / 28,251.74-38,987.03-15,505.04

Finding the Fourth Proportional to 28,251.74, 38,987.03 and 15,505.04

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Solution

The fourth proportional to 28,251.74, 38,987.03 and 15,505.04 is: 21,396.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.74 : 38,987.03 = 15,505.04 : x
  2. Step 2: Convert to fraction form
    28,251.74/38,987.03 = 15,505.04/x
  3. Step 3: Cross multiply
    28,251.74x = 38,987.03 × 15,505.04
  4. Step 4: Simplify right side
    28,251.74x = 604,495,187.17
  5. Step 5: Solve for x
    x = 604,495,187.17/28,251.74
  6. Step 6: Final answer
    x = 21,396.75

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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.