Home / 15,015.36-20,720.61-8,966.62

Finding the Fourth Proportional to 15,015.36, 20,720.61 and 8,966.62

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Solution

The fourth proportional to 15,015.36, 20,720.61 and 8,966.62 is: 12,373.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.36 : 20,720.61 = 8,966.62 : x
  2. Step 2: Convert to fraction form
    15,015.36/20,720.61 = 8,966.62/x
  3. Step 3: Cross multiply
    15,015.36x = 20,720.61 × 8,966.62
  4. Step 4: Simplify right side
    15,015.36x = 185,793,817.86
  5. Step 5: Solve for x
    x = 185,793,817.86/15,015.36
  6. Step 6: Final answer
    x = 12,373.58

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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.