Home / 20,426.07-28,188.09-11,473.95

Finding the Fourth Proportional to 20,426.07, 28,188.09 and 11,473.95

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Solution

The fourth proportional to 20,426.07, 28,188.09 and 11,473.95 is: 15,834.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.07 : 28,188.09 = 11,473.95 : x
  2. Step 2: Convert to fraction form
    20,426.07/28,188.09 = 11,473.95/x
  3. Step 3: Cross multiply
    20,426.07x = 28,188.09 × 11,473.95
  4. Step 4: Simplify right side
    20,426.07x = 323,428,735.26
  5. Step 5: Solve for x
    x = 323,428,735.26/20,426.07
  6. Step 6: Final answer
    x = 15,834.11

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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.