Home / 10,988.60-15,161.64-6,511.58

Finding the Fourth Proportional to 10,988.60, 15,161.64 and 6,511.58

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Solution

The fourth proportional to 10,988.60, 15,161.64 and 6,511.58 is: 8,984.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.60 : 15,161.64 = 6,511.58 : x
  2. Step 2: Convert to fraction form
    10,988.60/15,161.64 = 6,511.58/x
  3. Step 3: Cross multiply
    10,988.60x = 15,161.64 × 6,511.58
  4. Step 4: Simplify right side
    10,988.60x = 98,726,155.98
  5. Step 5: Solve for x
    x = 98,726,155.98/10,988.60
  6. Step 6: Final answer
    x = 8,984.41

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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.