Home / 20,486.34-28,271.68-11,534.17

Finding the Fourth Proportional to 20,486.34, 28,271.68 and 11,534.17

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Solution

The fourth proportional to 20,486.34, 28,271.68 and 11,534.17 is: 15,917.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.34 : 28,271.68 = 11,534.17 : x
  2. Step 2: Convert to fraction form
    20,486.34/28,271.68 = 11,534.17/x
  3. Step 3: Cross multiply
    20,486.34x = 28,271.68 × 11,534.17
  4. Step 4: Simplify right side
    20,486.34x = 326,090,164.28
  5. Step 5: Solve for x
    x = 326,090,164.28/20,486.34
  6. Step 6: Final answer
    x = 15,917.44

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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.