Home / 13,545.57-18,693.85-7,577.80

Finding the Fourth Proportional to 13,545.57, 18,693.85 and 7,577.80

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Solution

The fourth proportional to 13,545.57, 18,693.85 and 7,577.80 is: 10,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.57 : 18,693.85 = 7,577.80 : x
  2. Step 2: Convert to fraction form
    13,545.57/18,693.85 = 7,577.80/x
  3. Step 3: Cross multiply
    13,545.57x = 18,693.85 × 7,577.80
  4. Step 4: Simplify right side
    13,545.57x = 141,658,256.53
  5. Step 5: Solve for x
    x = 141,658,256.53/13,545.57
  6. Step 6: Final answer
    x = 10,457.90

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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.