Home / 13,217.72-18,239.82-7,248.28

Finding the Fourth Proportional to 13,217.72, 18,239.82 and 7,248.28

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Solution

The fourth proportional to 13,217.72, 18,239.82 and 7,248.28 is: 10,002.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.72 : 18,239.82 = 7,248.28 : x
  2. Step 2: Convert to fraction form
    13,217.72/18,239.82 = 7,248.28/x
  3. Step 3: Cross multiply
    13,217.72x = 18,239.82 × 7,248.28
  4. Step 4: Simplify right side
    13,217.72x = 132,207,322.51
  5. Step 5: Solve for x
    x = 132,207,322.51/13,217.72
  6. Step 6: Final answer
    x = 10,002.28

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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.