Home / 28,260.14-38,998.80-15,513.30

Finding the Fourth Proportional to 28,260.14, 38,998.80 and 15,513.30

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Solution

The fourth proportional to 28,260.14, 38,998.80 and 15,513.30 is: 21,408.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.14 : 38,998.80 = 15,513.30 : x
  2. Step 2: Convert to fraction form
    28,260.14/38,998.80 = 15,513.30/x
  3. Step 3: Cross multiply
    28,260.14x = 38,998.80 × 15,513.30
  4. Step 4: Simplify right side
    28,260.14x = 605,000,084.04
  5. Step 5: Solve for x
    x = 605,000,084.04/28,260.14
  6. Step 6: Final answer
    x = 21,408.25

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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.