Home / 13,447.64-18,557.47-7,479.18

Finding the Fourth Proportional to 13,447.64, 18,557.47 and 7,479.18

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Solution

The fourth proportional to 13,447.64, 18,557.47 and 7,479.18 is: 10,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.64 : 18,557.47 = 7,479.18 : x
  2. Step 2: Convert to fraction form
    13,447.64/18,557.47 = 7,479.18/x
  3. Step 3: Cross multiply
    13,447.64x = 18,557.47 × 7,479.18
  4. Step 4: Simplify right side
    13,447.64x = 138,794,565.69
  5. Step 5: Solve for x
    x = 138,794,565.69/13,447.64
  6. Step 6: Final answer
    x = 10,321.11

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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.