Home / 21,665.52-32,353.65-20,558.43

Finding the Fourth Proportional to 21,665.52, 32,353.65 and 20,558.43

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Solution

The fourth proportional to 21,665.52, 32,353.65 and 20,558.43 is: 30,700.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,665.52 : 32,353.65 = 20,558.43 : x
  2. Step 2: Convert to fraction form
    21,665.52/32,353.65 = 20,558.43/x
  3. Step 3: Cross multiply
    21,665.52x = 32,353.65 × 20,558.43
  4. Step 4: Simplify right side
    21,665.52x = 665,140,248.77
  5. Step 5: Solve for x
    x = 665,140,248.77/21,665.52
  6. Step 6: Final answer
    x = 30,700.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.