Home / 21,556.40-32,334.60-20,001.20

Finding the Fourth Proportional to 21,556.40, 32,334.60 and 20,001.20

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Solution

The fourth proportional to 21,556.40, 32,334.60 and 20,001.20 is: 30,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.40 : 32,334.60 = 20,001.20 : x
  2. Step 2: Convert to fraction form
    21,556.40/32,334.60 = 20,001.20/x
  3. Step 3: Cross multiply
    21,556.40x = 32,334.60 × 20,001.20
  4. Step 4: Simplify right side
    21,556.40x = 646,730,801.52
  5. Step 5: Solve for x
    x = 646,730,801.52/21,556.40
  6. Step 6: Final answer
    x = 30,001.80

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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.