Home / 15,179.28-20,967.36-11,636.40

Finding the Fourth Proportional to 15,179.28, 20,967.36 and 11,636.40

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Solution

The fourth proportional to 15,179.28, 20,967.36 and 11,636.40 is: 16,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.28 : 20,967.36 = 11,636.40 : x
  2. Step 2: Convert to fraction form
    15,179.28/20,967.36 = 11,636.40/x
  3. Step 3: Cross multiply
    15,179.28x = 20,967.36 × 11,636.40
  4. Step 4: Simplify right side
    15,179.28x = 243,984,587.90
  5. Step 5: Solve for x
    x = 243,984,587.90/15,179.28
  6. Step 6: Final answer
    x = 16,073.53

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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.