Home / 20,486.46-28,271.85-11,534.28

Finding the Fourth Proportional to 20,486.46, 28,271.85 and 11,534.28

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Solution

The fourth proportional to 20,486.46, 28,271.85 and 11,534.28 is: 15,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.46 : 28,271.85 = 11,534.28 : x
  2. Step 2: Convert to fraction form
    20,486.46/28,271.85 = 11,534.28/x
  3. Step 3: Cross multiply
    20,486.46x = 28,271.85 × 11,534.28
  4. Step 4: Simplify right side
    20,486.46x = 326,095,434.02
  5. Step 5: Solve for x
    x = 326,095,434.02/20,486.46
  6. Step 6: Final answer
    x = 15,917.61

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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.