Home / 21,480.34-32,214.31-7,439.80

Finding the Fourth Proportional to 21,480.34, 32,214.31 and 7,439.80

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Solution

The fourth proportional to 21,480.34, 32,214.31 and 7,439.80 is: 11,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.34 : 32,214.31 = 7,439.80 : x
  2. Step 2: Convert to fraction form
    21,480.34/32,214.31 = 7,439.80/x
  3. Step 3: Cross multiply
    21,480.34x = 32,214.31 × 7,439.80
  4. Step 4: Simplify right side
    21,480.34x = 239,667,984.80
  5. Step 5: Solve for x
    x = 239,667,984.80/21,480.34
  6. Step 6: Final answer
    x = 11,157.55

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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.