Home / 13,545.64-20,314.33-4,778.51

Finding the Fourth Proportional to 13,545.64, 20,314.33 and 4,778.51

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Solution

The fourth proportional to 13,545.64, 20,314.33 and 4,778.51 is: 7,166.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.64 : 20,314.33 = 4,778.51 : x
  2. Step 2: Convert to fraction form
    13,545.64/20,314.33 = 4,778.51/x
  3. Step 3: Cross multiply
    13,545.64x = 20,314.33 × 4,778.51
  4. Step 4: Simplify right side
    13,545.64x = 97,072,115.53
  5. Step 5: Solve for x
    x = 97,072,115.53/13,545.64
  6. Step 6: Final answer
    x = 7,166.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.