Home / 21,948.90-32,911.20-7,150.20

Finding the Fourth Proportional to 21,948.90, 32,911.20 and 7,150.20

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Solution

The fourth proportional to 21,948.90, 32,911.20 and 7,150.20 is: 10,721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.90 : 32,911.20 = 7,150.20 : x
  2. Step 2: Convert to fraction form
    21,948.90/32,911.20 = 7,150.20/x
  3. Step 3: Cross multiply
    21,948.90x = 32,911.20 × 7,150.20
  4. Step 4: Simplify right side
    21,948.90x = 235,321,662.24
  5. Step 5: Solve for x
    x = 235,321,662.24/21,948.90
  6. Step 6: Final answer
    x = 10,721.34

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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.