Home / 10,887.68-15,023.28-6,636.48

Finding the Fourth Proportional to 10,887.68, 15,023.28 and 6,636.48

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Solution

The fourth proportional to 10,887.68, 15,023.28 and 6,636.48 is: 9,157.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.68 : 15,023.28 = 6,636.48 : x
  2. Step 2: Convert to fraction form
    10,887.68/15,023.28 = 6,636.48/x
  3. Step 3: Cross multiply
    10,887.68x = 15,023.28 × 6,636.48
  4. Step 4: Simplify right side
    10,887.68x = 99,701,697.25
  5. Step 5: Solve for x
    x = 99,701,697.25/10,887.68
  6. Step 6: Final answer
    x = 9,157.29

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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.