Home / 15,988.72-22,065.75-8,820.04

Finding the Fourth Proportional to 15,988.72, 22,065.75 and 8,820.04

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Solution

The fourth proportional to 15,988.72, 22,065.75 and 8,820.04 is: 12,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.72 : 22,065.75 = 8,820.04 : x
  2. Step 2: Convert to fraction form
    15,988.72/22,065.75 = 8,820.04/x
  3. Step 3: Cross multiply
    15,988.72x = 22,065.75 × 8,820.04
  4. Step 4: Simplify right side
    15,988.72x = 194,620,797.63
  5. Step 5: Solve for x
    x = 194,620,797.63/15,988.72
  6. Step 6: Final answer
    x = 12,172.38

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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.