Home / 21,751.04-30,016.22-12,319.68

Finding the Fourth Proportional to 21,751.04, 30,016.22 and 12,319.68

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Solution

The fourth proportional to 21,751.04, 30,016.22 and 12,319.68 is: 17,001.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.04 : 30,016.22 = 12,319.68 : x
  2. Step 2: Convert to fraction form
    21,751.04/30,016.22 = 12,319.68/x
  3. Step 3: Cross multiply
    21,751.04x = 30,016.22 × 12,319.68
  4. Step 4: Simplify right side
    21,751.04x = 369,790,225.21
  5. Step 5: Solve for x
    x = 369,790,225.21/21,751.04
  6. Step 6: Final answer
    x = 17,001.04

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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.