Home / 13,275.23-18,338.47-12,575.39

Finding the Fourth Proportional to 13,275.23, 18,338.47 and 12,575.39

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Solution

The fourth proportional to 13,275.23, 18,338.47 and 12,575.39 is: 17,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.23 : 18,338.47 = 12,575.39 : x
  2. Step 2: Convert to fraction form
    13,275.23/18,338.47 = 12,575.39/x
  3. Step 3: Cross multiply
    13,275.23x = 18,338.47 × 12,575.39
  4. Step 4: Simplify right side
    13,275.23x = 230,613,289.12
  5. Step 5: Solve for x
    x = 230,613,289.12/13,275.23
  6. Step 6: Final answer
    x = 17,371.70

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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.