Home / 21,709.60-32,564.40-21,479.20

Finding the Fourth Proportional to 21,709.60, 32,564.40 and 21,479.20

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Solution

The fourth proportional to 21,709.60, 32,564.40 and 21,479.20 is: 32,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.60 : 32,564.40 = 21,479.20 : x
  2. Step 2: Convert to fraction form
    21,709.60/32,564.40 = 21,479.20/x
  3. Step 3: Cross multiply
    21,709.60x = 32,564.40 × 21,479.20
  4. Step 4: Simplify right side
    21,709.60x = 699,457,260.48
  5. Step 5: Solve for x
    x = 699,457,260.48/21,709.60
  6. Step 6: Final answer
    x = 32,218.80

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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.