Home / 20,967.16-28,928.47-12,464.95

Finding the Fourth Proportional to 20,967.16, 28,928.47 and 12,464.95

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Solution

The fourth proportional to 20,967.16, 28,928.47 and 12,464.95 is: 17,197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.16 : 28,928.47 = 12,464.95 : x
  2. Step 2: Convert to fraction form
    20,967.16/28,928.47 = 12,464.95/x
  3. Step 3: Cross multiply
    20,967.16x = 28,928.47 × 12,464.95
  4. Step 4: Simplify right side
    20,967.16x = 360,591,932.13
  5. Step 5: Solve for x
    x = 360,591,932.13/20,967.16
  6. Step 6: Final answer
    x = 17,197.94

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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.