Home / 13,447.51-18,557.30-7,479.05

Finding the Fourth Proportional to 13,447.51, 18,557.30 and 7,479.05

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Solution

The fourth proportional to 13,447.51, 18,557.30 and 7,479.05 is: 10,320.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.51 : 18,557.30 = 7,479.05 : x
  2. Step 2: Convert to fraction form
    13,447.51/18,557.30 = 7,479.05/x
  3. Step 3: Cross multiply
    13,447.51x = 18,557.30 × 7,479.05
  4. Step 4: Simplify right side
    13,447.51x = 138,791,057.05
  5. Step 5: Solve for x
    x = 138,791,057.05/13,447.51
  6. Step 6: Final answer
    x = 10,320.95

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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.