Home / 21,432.90-32,337.87-20,696.58

Finding the Fourth Proportional to 21,432.90, 32,337.87 and 20,696.58

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Solution

The fourth proportional to 21,432.90, 32,337.87 and 20,696.58 is: 31,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.90 : 32,337.87 = 20,696.58 : x
  2. Step 2: Convert to fraction form
    21,432.90/32,337.87 = 20,696.58/x
  3. Step 3: Cross multiply
    21,432.90x = 32,337.87 × 20,696.58
  4. Step 4: Simplify right side
    21,432.90x = 669,283,313.48
  5. Step 5: Solve for x
    x = 669,283,313.48/21,432.90
  6. Step 6: Final answer
    x = 31,226.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.