Home / 21,728.60-32,555.10-10,017.80

Finding the Fourth Proportional to 21,728.60, 32,555.10 and 10,017.80

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Solution

The fourth proportional to 21,728.60, 32,555.10 and 10,017.80 is: 15,009.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,728.60 : 32,555.10 = 10,017.80 : x
  2. Step 2: Convert to fraction form
    21,728.60/32,555.10 = 10,017.80/x
  3. Step 3: Cross multiply
    21,728.60x = 32,555.10 × 10,017.80
  4. Step 4: Simplify right side
    21,728.60x = 326,130,480.78
  5. Step 5: Solve for x
    x = 326,130,480.78/21,728.60
  6. Step 6: Final answer
    x = 15,009.27

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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.