Home / 13,448.38-18,557.34-7,479.09

Finding the Fourth Proportional to 13,448.38, 18,557.34 and 7,479.09

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Solution

The fourth proportional to 13,448.38, 18,557.34 and 7,479.09 is: 10,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.38 : 18,557.34 = 7,479.09 : x
  2. Step 2: Convert to fraction form
    13,448.38/18,557.34 = 7,479.09/x
  3. Step 3: Cross multiply
    13,448.38x = 18,557.34 × 7,479.09
  4. Step 4: Simplify right side
    13,448.38x = 138,791,923.23
  5. Step 5: Solve for x
    x = 138,791,923.23/13,448.38
  6. Step 6: Final answer
    x = 10,320.35

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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.