Home / 10,988.68-15,162.24-8,889.16

Finding the Fourth Proportional to 10,988.68, 15,162.24 and 8,889.16

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Solution

The fourth proportional to 10,988.68, 15,162.24 and 8,889.16 is: 12,265.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.68 : 15,162.24 = 8,889.16 : x
  2. Step 2: Convert to fraction form
    10,988.68/15,162.24 = 8,889.16/x
  3. Step 3: Cross multiply
    10,988.68x = 15,162.24 × 8,889.16
  4. Step 4: Simplify right side
    10,988.68x = 134,779,577.32
  5. Step 5: Solve for x
    x = 134,779,577.32/10,988.68
  6. Step 6: Final answer
    x = 12,265.31

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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.