Home / 15,224.66-21,009.52-8,851.78

Finding the Fourth Proportional to 15,224.66, 21,009.52 and 8,851.78

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Solution

The fourth proportional to 15,224.66, 21,009.52 and 8,851.78 is: 12,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,224.66 : 21,009.52 = 8,851.78 : x
  2. Step 2: Convert to fraction form
    15,224.66/21,009.52 = 8,851.78/x
  3. Step 3: Cross multiply
    15,224.66x = 21,009.52 × 8,851.78
  4. Step 4: Simplify right side
    15,224.66x = 185,971,648.95
  5. Step 5: Solve for x
    x = 185,971,648.95/15,224.66
  6. Step 6: Final answer
    x = 12,215.16

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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.