Home / 13,559.28-18,708.12-8,254.32

Finding the Fourth Proportional to 13,559.28, 18,708.12 and 8,254.32

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Solution

The fourth proportional to 13,559.28, 18,708.12 and 8,254.32 is: 11,388.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.28 : 18,708.12 = 8,254.32 : x
  2. Step 2: Convert to fraction form
    13,559.28/18,708.12 = 8,254.32/x
  3. Step 3: Cross multiply
    13,559.28x = 18,708.12 × 8,254.32
  4. Step 4: Simplify right side
    13,559.28x = 154,422,809.08
  5. Step 5: Solve for x
    x = 154,422,809.08/13,559.28
  6. Step 6: Final answer
    x = 11,388.72

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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.