Home / 15,919.36-21,967.65-8,749.12

Finding the Fourth Proportional to 15,919.36, 21,967.65 and 8,749.12

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Solution

The fourth proportional to 15,919.36, 21,967.65 and 8,749.12 is: 12,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.36 : 21,967.65 = 8,749.12 : x
  2. Step 2: Convert to fraction form
    15,919.36/21,967.65 = 8,749.12/x
  3. Step 3: Cross multiply
    15,919.36x = 21,967.65 × 8,749.12
  4. Step 4: Simplify right side
    15,919.36x = 192,197,654.02
  5. Step 5: Solve for x
    x = 192,197,654.02/15,919.36
  6. Step 6: Final answer
    x = 12,073.20

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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.