Home / 13,979.55-19,294.50-8,015.20

Finding the Fourth Proportional to 13,979.55, 19,294.50 and 8,015.20

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Solution

The fourth proportional to 13,979.55, 19,294.50 and 8,015.20 is: 11,062.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.55 : 19,294.50 = 8,015.20 : x
  2. Step 2: Convert to fraction form
    13,979.55/19,294.50 = 8,015.20/x
  3. Step 3: Cross multiply
    13,979.55x = 19,294.50 × 8,015.20
  4. Step 4: Simplify right side
    13,979.55x = 154,649,276.40
  5. Step 5: Solve for x
    x = 154,649,276.40/13,979.55
  6. Step 6: Final answer
    x = 11,062.54

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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.