Home / 10,988.09-15,162.57-6,511.12

Finding the Fourth Proportional to 10,988.09, 15,162.57 and 6,511.12

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Solution

The fourth proportional to 10,988.09, 15,162.57 and 6,511.12 is: 8,984.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.09 : 15,162.57 = 6,511.12 : x
  2. Step 2: Convert to fraction form
    10,988.09/15,162.57 = 6,511.12/x
  3. Step 3: Cross multiply
    10,988.09x = 15,162.57 × 6,511.12
  4. Step 4: Simplify right side
    10,988.09x = 98,725,274.87
  5. Step 5: Solve for x
    x = 98,725,274.87/10,988.09
  6. Step 6: Final answer
    x = 8,984.75

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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.