Home / 20,532.31-28,329.73-12,465.76

Finding the Fourth Proportional to 20,532.31, 28,329.73 and 12,465.76

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Solution

The fourth proportional to 20,532.31, 28,329.73 and 12,465.76 is: 17,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.31 : 28,329.73 = 12,465.76 : x
  2. Step 2: Convert to fraction form
    20,532.31/28,329.73 = 12,465.76/x
  3. Step 3: Cross multiply
    20,532.31x = 28,329.73 × 12,465.76
  4. Step 4: Simplify right side
    20,532.31x = 353,151,615.04
  5. Step 5: Solve for x
    x = 353,151,615.04/20,532.31
  6. Step 6: Final answer
    x = 17,199.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.