Home / 13,446.03-18,557.10-8,140.80

Finding the Fourth Proportional to 13,446.03, 18,557.10 and 8,140.80

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Solution

The fourth proportional to 13,446.03, 18,557.10 and 8,140.80 is: 11,235.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.03 : 18,557.10 = 8,140.80 : x
  2. Step 2: Convert to fraction form
    13,446.03/18,557.10 = 8,140.80/x
  3. Step 3: Cross multiply
    13,446.03x = 18,557.10 × 8,140.80
  4. Step 4: Simplify right side
    13,446.03x = 151,069,639.68
  5. Step 5: Solve for x
    x = 151,069,639.68/13,446.03
  6. Step 6: Final answer
    x = 11,235.26

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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.