Home / 21,820.20-32,730.30-5,404.20

Finding the Fourth Proportional to 21,820.20, 32,730.30 and 5,404.20

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Solution

The fourth proportional to 21,820.20, 32,730.30 and 5,404.20 is: 8,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.20 : 32,730.30 = 5,404.20 : x
  2. Step 2: Convert to fraction form
    21,820.20/32,730.30 = 5,404.20/x
  3. Step 3: Cross multiply
    21,820.20x = 32,730.30 × 5,404.20
  4. Step 4: Simplify right side
    21,820.20x = 176,881,087.26
  5. Step 5: Solve for x
    x = 176,881,087.26/21,820.20
  6. Step 6: Final answer
    x = 8,106.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.