Home / 20,500.65-28,292.34-11,426.59

Finding the Fourth Proportional to 20,500.65, 28,292.34 and 11,426.59

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Solution

The fourth proportional to 20,500.65, 28,292.34 and 11,426.59 is: 15,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.65 : 28,292.34 = 11,426.59 : x
  2. Step 2: Convert to fraction form
    20,500.65/28,292.34 = 11,426.59/x
  3. Step 3: Cross multiply
    20,500.65x = 28,292.34 × 11,426.59
  4. Step 4: Simplify right side
    20,500.65x = 323,284,969.32
  5. Step 5: Solve for x
    x = 323,284,969.32/20,500.65
  6. Step 6: Final answer
    x = 15,769.50

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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.