Home / 13,512.90-18,647.49-7,545.13

Finding the Fourth Proportional to 13,512.90, 18,647.49 and 7,545.13

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Solution

The fourth proportional to 13,512.90, 18,647.49 and 7,545.13 is: 10,412.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.90 : 18,647.49 = 7,545.13 : x
  2. Step 2: Convert to fraction form
    13,512.90/18,647.49 = 7,545.13/x
  3. Step 3: Cross multiply
    13,512.90x = 18,647.49 × 7,545.13
  4. Step 4: Simplify right side
    13,512.90x = 140,697,736.22
  5. Step 5: Solve for x
    x = 140,697,736.22/13,512.90
  6. Step 6: Final answer
    x = 10,412.11

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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.