Home / 28,114.18-38,799.21-15,540.10

Finding the Fourth Proportional to 28,114.18, 38,799.21 and 15,540.10

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Solution

The fourth proportional to 28,114.18, 38,799.21 and 15,540.10 is: 21,446.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.18 : 38,799.21 = 15,540.10 : x
  2. Step 2: Convert to fraction form
    28,114.18/38,799.21 = 15,540.10/x
  3. Step 3: Cross multiply
    28,114.18x = 38,799.21 × 15,540.10
  4. Step 4: Simplify right side
    28,114.18x = 602,943,603.32
  5. Step 5: Solve for x
    x = 602,943,603.32/28,114.18
  6. Step 6: Final answer
    x = 21,446.25

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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.