Home / 21,742.60-32,570.70-11,864.20

Finding the Fourth Proportional to 21,742.60, 32,570.70 and 11,864.20

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Solution

The fourth proportional to 21,742.60, 32,570.70 and 11,864.20 is: 17,772.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.60 : 32,570.70 = 11,864.20 : x
  2. Step 2: Convert to fraction form
    21,742.60/32,570.70 = 11,864.20/x
  3. Step 3: Cross multiply
    21,742.60x = 32,570.70 × 11,864.20
  4. Step 4: Simplify right side
    21,742.60x = 386,425,298.94
  5. Step 5: Solve for x
    x = 386,425,298.94/21,742.60
  6. Step 6: Final answer
    x = 17,772.73

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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.