Home / 10,912.61-15,068.28-8,896.34

Finding the Fourth Proportional to 10,912.61, 15,068.28 and 8,896.34

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Solution

The fourth proportional to 10,912.61, 15,068.28 and 8,896.34 is: 12,284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.61 : 15,068.28 = 8,896.34 : x
  2. Step 2: Convert to fraction form
    10,912.61/15,068.28 = 8,896.34/x
  3. Step 3: Cross multiply
    10,912.61x = 15,068.28 × 8,896.34
  4. Step 4: Simplify right side
    10,912.61x = 134,052,542.10
  5. Step 5: Solve for x
    x = 134,052,542.10/10,912.61
  6. Step 6: Final answer
    x = 12,284.19

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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.