Home / 21,816.48-32,728.86-9,971.04

Finding the Fourth Proportional to 21,816.48, 32,728.86 and 9,971.04

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Solution

The fourth proportional to 21,816.48, 32,728.86 and 9,971.04 is: 14,958.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.48 : 32,728.86 = 9,971.04 : x
  2. Step 2: Convert to fraction form
    21,816.48/32,728.86 = 9,971.04/x
  3. Step 3: Cross multiply
    21,816.48x = 32,728.86 × 9,971.04
  4. Step 4: Simplify right side
    21,816.48x = 326,340,772.21
  5. Step 5: Solve for x
    x = 326,340,772.21/21,816.48
  6. Step 6: Final answer
    x = 14,958.45

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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.