Home / 21,747.60-32,621.40-18,057.20

Finding the Fourth Proportional to 21,747.60, 32,621.40 and 18,057.20

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Solution

The fourth proportional to 21,747.60, 32,621.40 and 18,057.20 is: 27,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.60 : 32,621.40 = 18,057.20 : x
  2. Step 2: Convert to fraction form
    21,747.60/32,621.40 = 18,057.20/x
  3. Step 3: Cross multiply
    21,747.60x = 32,621.40 × 18,057.20
  4. Step 4: Simplify right side
    21,747.60x = 589,051,144.08
  5. Step 5: Solve for x
    x = 589,051,144.08/21,747.60
  6. Step 6: Final answer
    x = 27,085.80

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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.