Home / 10,118.58-15,151.11-7,140.81

Finding the Fourth Proportional to 10,118.58, 15,151.11 and 7,140.81

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Solution

The fourth proportional to 10,118.58, 15,151.11 and 7,140.81 is: 10,692.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,118.58 : 15,151.11 = 7,140.81 : x
  2. Step 2: Convert to fraction form
    10,118.58/15,151.11 = 7,140.81/x
  3. Step 3: Cross multiply
    10,118.58x = 15,151.11 × 7,140.81
  4. Step 4: Simplify right side
    10,118.58x = 108,191,197.80
  5. Step 5: Solve for x
    x = 108,191,197.80/10,118.58
  6. Step 6: Final answer
    x = 10,692.33

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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.