Home / 15,763.20-21,767.28-15,016.32

Finding the Fourth Proportional to 15,763.20, 21,767.28 and 15,016.32

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Solution

The fourth proportional to 15,763.20, 21,767.28 and 15,016.32 is: 20,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.20 : 21,767.28 = 15,016.32 : x
  2. Step 2: Convert to fraction form
    15,763.20/21,767.28 = 15,016.32/x
  3. Step 3: Cross multiply
    15,763.20x = 21,767.28 × 15,016.32
  4. Step 4: Simplify right side
    15,763.20x = 326,864,442.01
  5. Step 5: Solve for x
    x = 326,864,442.01/15,763.20
  6. Step 6: Final answer
    x = 20,735.92

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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.