Home / 28,120.23-38,805.89-15,373.49

Finding the Fourth Proportional to 28,120.23, 38,805.89 and 15,373.49

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Solution

The fourth proportional to 28,120.23, 38,805.89 and 15,373.49 is: 21,215.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.23 : 38,805.89 = 15,373.49 : x
  2. Step 2: Convert to fraction form
    28,120.23/38,805.89 = 15,373.49/x
  3. Step 3: Cross multiply
    28,120.23x = 38,805.89 × 15,373.49
  4. Step 4: Simplify right side
    28,120.23x = 596,581,690.96
  5. Step 5: Solve for x
    x = 596,581,690.96/28,120.23
  6. Step 6: Final answer
    x = 21,215.39

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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.