Home / 20,807.39-28,706.10-13,252.37

Finding the Fourth Proportional to 20,807.39, 28,706.10 and 13,252.37

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Solution

The fourth proportional to 20,807.39, 28,706.10 and 13,252.37 is: 18,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.39 : 28,706.10 = 13,252.37 : x
  2. Step 2: Convert to fraction form
    20,807.39/28,706.10 = 13,252.37/x
  3. Step 3: Cross multiply
    20,807.39x = 28,706.10 × 13,252.37
  4. Step 4: Simplify right side
    20,807.39x = 380,423,714.93
  5. Step 5: Solve for x
    x = 380,423,714.93/20,807.39
  6. Step 6: Final answer
    x = 18,283.11

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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.