Home / 13,115.23-18,099.08-7,146.95

Finding the Fourth Proportional to 13,115.23, 18,099.08 and 7,146.95

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Solution

The fourth proportional to 13,115.23, 18,099.08 and 7,146.95 is: 9,862.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.23 : 18,099.08 = 7,146.95 : x
  2. Step 2: Convert to fraction form
    13,115.23/18,099.08 = 7,146.95/x
  3. Step 3: Cross multiply
    13,115.23x = 18,099.08 × 7,146.95
  4. Step 4: Simplify right side
    13,115.23x = 129,353,219.81
  5. Step 5: Solve for x
    x = 129,353,219.81/13,115.23
  6. Step 6: Final answer
    x = 9,862.83

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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.