Home / 15,258.24-21,039.72-13,251.08

Finding the Fourth Proportional to 15,258.24, 21,039.72 and 13,251.08

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Solution

The fourth proportional to 15,258.24, 21,039.72 and 13,251.08 is: 18,272.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,258.24 : 21,039.72 = 13,251.08 : x
  2. Step 2: Convert to fraction form
    15,258.24/21,039.72 = 13,251.08/x
  3. Step 3: Cross multiply
    15,258.24x = 21,039.72 × 13,251.08
  4. Step 4: Simplify right side
    15,258.24x = 278,799,012.90
  5. Step 5: Solve for x
    x = 278,799,012.90/15,258.24
  6. Step 6: Final answer
    x = 18,272.03

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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.