Home / 15,348.64-21,182.16-13,257.76

Finding the Fourth Proportional to 15,348.64, 21,182.16 and 13,257.76

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Solution

The fourth proportional to 15,348.64, 21,182.16 and 13,257.76 is: 18,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.64 : 21,182.16 = 13,257.76 : x
  2. Step 2: Convert to fraction form
    15,348.64/21,182.16 = 13,257.76/x
  3. Step 3: Cross multiply
    15,348.64x = 21,182.16 × 13,257.76
  4. Step 4: Simplify right side
    15,348.64x = 280,827,993.56
  5. Step 5: Solve for x
    x = 280,827,993.56/15,348.64
  6. Step 6: Final answer
    x = 18,296.60

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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.