Home / 15,769.43-21,771.96-9,809.21

Finding the Fourth Proportional to 15,769.43, 21,771.96 and 9,809.21

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Solution

The fourth proportional to 15,769.43, 21,771.96 and 9,809.21 is: 13,543.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.43 : 21,771.96 = 9,809.21 : x
  2. Step 2: Convert to fraction form
    15,769.43/21,771.96 = 9,809.21/x
  3. Step 3: Cross multiply
    15,769.43x = 21,771.96 × 9,809.21
  4. Step 4: Simplify right side
    15,769.43x = 213,565,727.75
  5. Step 5: Solve for x
    x = 213,565,727.75/15,769.43
  6. Step 6: Final answer
    x = 13,543.02

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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.