Home / 39,680.48-54,760.64-21,776.13

Finding the Fourth Proportional to 39,680.48, 54,760.64 and 21,776.13

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Solution

The fourth proportional to 39,680.48, 54,760.64 and 21,776.13 is: 30,051.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.48 : 54,760.64 = 21,776.13 : x
  2. Step 2: Convert to fraction form
    39,680.48/54,760.64 = 21,776.13/x
  3. Step 3: Cross multiply
    39,680.48x = 54,760.64 × 21,776.13
  4. Step 4: Simplify right side
    39,680.48x = 1,192,474,541.72
  5. Step 5: Solve for x
    x = 1,192,474,541.72/39,680.48
  6. Step 6: Final answer
    x = 30,051.92

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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.