Home / 20,983.54-28,961.16-12,031.10

Finding the Fourth Proportional to 20,983.54, 28,961.16 and 12,031.10

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Solution

The fourth proportional to 20,983.54, 28,961.16 and 12,031.10 is: 16,605.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.54 : 28,961.16 = 12,031.10 : x
  2. Step 2: Convert to fraction form
    20,983.54/28,961.16 = 12,031.10/x
  3. Step 3: Cross multiply
    20,983.54x = 28,961.16 × 12,031.10
  4. Step 4: Simplify right side
    20,983.54x = 348,434,612.08
  5. Step 5: Solve for x
    x = 348,434,612.08/20,983.54
  6. Step 6: Final answer
    x = 16,605.14

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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.