Home / 20,426.60-28,186.98-11,473.40

Finding the Fourth Proportional to 20,426.60, 28,186.98 and 11,473.40

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Solution

The fourth proportional to 20,426.60, 28,186.98 and 11,473.40 is: 15,832.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.60 : 28,186.98 = 11,473.40 : x
  2. Step 2: Convert to fraction form
    20,426.60/28,186.98 = 11,473.40/x
  3. Step 3: Cross multiply
    20,426.60x = 28,186.98 × 11,473.40
  4. Step 4: Simplify right side
    20,426.60x = 323,400,496.33
  5. Step 5: Solve for x
    x = 323,400,496.33/20,426.60
  6. Step 6: Final answer
    x = 15,832.32

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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.