Home / 20,650.70-28,498.08-12,698.12

Finding the Fourth Proportional to 20,650.70, 28,498.08 and 12,698.12

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Solution

The fourth proportional to 20,650.70, 28,498.08 and 12,698.12 is: 17,523.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.70 : 28,498.08 = 12,698.12 : x
  2. Step 2: Convert to fraction form
    20,650.70/28,498.08 = 12,698.12/x
  3. Step 3: Cross multiply
    20,650.70x = 28,498.08 × 12,698.12
  4. Step 4: Simplify right side
    20,650.70x = 361,871,897.12
  5. Step 5: Solve for x
    x = 361,871,897.12/20,650.70
  6. Step 6: Final answer
    x = 17,523.47

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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.