Home / 21,966.22-30,315.55-12,536.20

Finding the Fourth Proportional to 21,966.22, 30,315.55 and 12,536.20

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Solution

The fourth proportional to 21,966.22, 30,315.55 and 12,536.20 is: 17,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.22 : 30,315.55 = 12,536.20 : x
  2. Step 2: Convert to fraction form
    21,966.22/30,315.55 = 12,536.20/x
  3. Step 3: Cross multiply
    21,966.22x = 30,315.55 × 12,536.20
  4. Step 4: Simplify right side
    21,966.22x = 380,041,797.91
  5. Step 5: Solve for x
    x = 380,041,797.91/21,966.22
  6. Step 6: Final answer
    x = 17,301.19

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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.