Home / 13,545.66-18,693.90-7,578.36

Finding the Fourth Proportional to 13,545.66, 18,693.90 and 7,578.36

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Solution

The fourth proportional to 13,545.66, 18,693.90 and 7,578.36 is: 10,458.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.66 : 18,693.90 = 7,578.36 : x
  2. Step 2: Convert to fraction form
    13,545.66/18,693.90 = 7,578.36/x
  3. Step 3: Cross multiply
    13,545.66x = 18,693.90 × 7,578.36
  4. Step 4: Simplify right side
    13,545.66x = 141,669,104.00
  5. Step 5: Solve for x
    x = 141,669,104.00/13,545.66
  6. Step 6: Final answer
    x = 10,458.63

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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.