Home / 20,998.44-28,979.28-12,048.48

Finding the Fourth Proportional to 20,998.44, 28,979.28 and 12,048.48

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Solution

The fourth proportional to 20,998.44, 28,979.28 and 12,048.48 is: 16,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.44 : 28,979.28 = 12,048.48 : x
  2. Step 2: Convert to fraction form
    20,998.44/28,979.28 = 12,048.48/x
  3. Step 3: Cross multiply
    20,998.44x = 28,979.28 × 12,048.48
  4. Step 4: Simplify right side
    20,998.44x = 349,156,275.49
  5. Step 5: Solve for x
    x = 349,156,275.49/20,998.44
  6. Step 6: Final answer
    x = 16,627.72

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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.