Home / 20,534.16-28,336.74-11,581.50

Finding the Fourth Proportional to 20,534.16, 28,336.74 and 11,581.50

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Solution

The fourth proportional to 20,534.16, 28,336.74 and 11,581.50 is: 15,982.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.16 : 28,336.74 = 11,581.50 : x
  2. Step 2: Convert to fraction form
    20,534.16/28,336.74 = 11,581.50/x
  3. Step 3: Cross multiply
    20,534.16x = 28,336.74 × 11,581.50
  4. Step 4: Simplify right side
    20,534.16x = 328,181,954.31
  5. Step 5: Solve for x
    x = 328,181,954.31/20,534.16
  6. Step 6: Final answer
    x = 15,982.24

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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.