Home / 39,655.71-54,724.95-21,750.86

Finding the Fourth Proportional to 39,655.71, 54,724.95 and 21,750.86

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Solution

The fourth proportional to 39,655.71, 54,724.95 and 21,750.86 is: 30,016.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,655.71 : 54,724.95 = 21,750.86 : x
  2. Step 2: Convert to fraction form
    39,655.71/54,724.95 = 21,750.86/x
  3. Step 3: Cross multiply
    39,655.71x = 54,724.95 × 21,750.86
  4. Step 4: Simplify right side
    39,655.71x = 1,190,314,725.96
  5. Step 5: Solve for x
    x = 1,190,314,725.96/39,655.71
  6. Step 6: Final answer
    x = 30,016.23

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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.