Home / 15,456.97-21,328.68-8,650.81

Finding the Fourth Proportional to 15,456.97, 21,328.68 and 8,650.81

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Solution

The fourth proportional to 15,456.97, 21,328.68 and 8,650.81 is: 11,937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.97 : 21,328.68 = 8,650.81 : x
  2. Step 2: Convert to fraction form
    15,456.97/21,328.68 = 8,650.81/x
  3. Step 3: Cross multiply
    15,456.97x = 21,328.68 × 8,650.81
  4. Step 4: Simplify right side
    15,456.97x = 184,510,358.23
  5. Step 5: Solve for x
    x = 184,510,358.23/15,456.97
  6. Step 6: Final answer
    x = 11,937.03

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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.