Home / 39,280.56-54,208.31-21,376.72

Finding the Fourth Proportional to 39,280.56, 54,208.31 and 21,376.72

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Solution

The fourth proportional to 39,280.56, 54,208.31 and 21,376.72 is: 29,500.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,280.56 : 54,208.31 = 21,376.72 : x
  2. Step 2: Convert to fraction form
    39,280.56/54,208.31 = 21,376.72/x
  3. Step 3: Cross multiply
    39,280.56x = 54,208.31 × 21,376.72
  4. Step 4: Simplify right side
    39,280.56x = 1,158,795,864.54
  5. Step 5: Solve for x
    x = 1,158,795,864.54/39,280.56
  6. Step 6: Final answer
    x = 29,500.49

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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.