Home / 21,383.40-32,082.48-18,948.60

Finding the Fourth Proportional to 21,383.40, 32,082.48 and 18,948.60

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Solution

The fourth proportional to 21,383.40, 32,082.48 and 18,948.60 is: 28,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.40 : 32,082.48 = 18,948.60 : x
  2. Step 2: Convert to fraction form
    21,383.40/32,082.48 = 18,948.60/x
  3. Step 3: Cross multiply
    21,383.40x = 32,082.48 × 18,948.60
  4. Step 4: Simplify right side
    21,383.40x = 607,918,080.53
  5. Step 5: Solve for x
    x = 607,918,080.53/21,383.40
  6. Step 6: Final answer
    x = 28,429.44

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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.