Home / 13,283.72-18,331.33-7,315.39

Finding the Fourth Proportional to 13,283.72, 18,331.33 and 7,315.39

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Solution

The fourth proportional to 13,283.72, 18,331.33 and 7,315.39 is: 10,095.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.72 : 18,331.33 = 7,315.39 : x
  2. Step 2: Convert to fraction form
    13,283.72/18,331.33 = 7,315.39/x
  3. Step 3: Cross multiply
    13,283.72x = 18,331.33 × 7,315.39
  4. Step 4: Simplify right side
    13,283.72x = 134,100,781.38
  5. Step 5: Solve for x
    x = 134,100,781.38/13,283.72
  6. Step 6: Final answer
    x = 10,095.12

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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.