Home / 20,506.92-28,298.88-12,957.36

Finding the Fourth Proportional to 20,506.92, 28,298.88 and 12,957.36

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Solution

The fourth proportional to 20,506.92, 28,298.88 and 12,957.36 is: 17,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.92 : 28,298.88 = 12,957.36 : x
  2. Step 2: Convert to fraction form
    20,506.92/28,298.88 = 12,957.36/x
  3. Step 3: Cross multiply
    20,506.92x = 28,298.88 × 12,957.36
  4. Step 4: Simplify right side
    20,506.92x = 366,678,775.76
  5. Step 5: Solve for x
    x = 366,678,775.76/20,506.92
  6. Step 6: Final answer
    x = 17,880.73

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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.