Home / 15,536.15-21,439.17-8,820.84

Finding the Fourth Proportional to 15,536.15, 21,439.17 and 8,820.84

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Solution

The fourth proportional to 15,536.15, 21,439.17 and 8,820.84 is: 12,172.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,536.15 : 21,439.17 = 8,820.84 : x
  2. Step 2: Convert to fraction form
    15,536.15/21,439.17 = 8,820.84/x
  3. Step 3: Cross multiply
    15,536.15x = 21,439.17 × 8,820.84
  4. Step 4: Simplify right side
    15,536.15x = 189,111,488.30
  5. Step 5: Solve for x
    x = 189,111,488.30/15,536.15
  6. Step 6: Final answer
    x = 12,172.36

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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.