Home / 21,820.59-30,070.17-15,522.03

Finding the Fourth Proportional to 21,820.59, 30,070.17 and 15,522.03

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Solution

The fourth proportional to 21,820.59, 30,070.17 and 15,522.03 is: 21,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.59 : 30,070.17 = 15,522.03 : x
  2. Step 2: Convert to fraction form
    21,820.59/30,070.17 = 15,522.03/x
  3. Step 3: Cross multiply
    21,820.59x = 30,070.17 × 15,522.03
  4. Step 4: Simplify right side
    21,820.59x = 466,750,080.85
  5. Step 5: Solve for x
    x = 466,750,080.85/21,820.59
  6. Step 6: Final answer
    x = 21,390.35

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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.