Home / 12,015.90-16,591.19-9,358.70

Finding the Fourth Proportional to 12,015.90, 16,591.19 and 9,358.70

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Solution

The fourth proportional to 12,015.90, 16,591.19 and 9,358.70 is: 12,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.90 : 16,591.19 = 9,358.70 : x
  2. Step 2: Convert to fraction form
    12,015.90/16,591.19 = 9,358.70/x
  3. Step 3: Cross multiply
    12,015.90x = 16,591.19 × 9,358.70
  4. Step 4: Simplify right side
    12,015.90x = 155,271,840.10
  5. Step 5: Solve for x
    x = 155,271,840.10/12,015.90
  6. Step 6: Final answer
    x = 12,922.20

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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.