Home / 15,768.43-21,770.58-9,808.21

Finding the Fourth Proportional to 15,768.43, 21,770.58 and 9,808.21

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Solution

The fourth proportional to 15,768.43, 21,770.58 and 9,808.21 is: 13,541.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.43 : 21,770.58 = 9,808.21 : x
  2. Step 2: Convert to fraction form
    15,768.43/21,770.58 = 9,808.21/x
  3. Step 3: Cross multiply
    15,768.43x = 21,770.58 × 9,808.21
  4. Step 4: Simplify right side
    15,768.43x = 213,530,420.46
  5. Step 5: Solve for x
    x = 213,530,420.46/15,768.43
  6. Step 6: Final answer
    x = 13,541.64

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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.