Home / 39,750.04-54,856.07-21,845.50

Finding the Fourth Proportional to 39,750.04, 54,856.07 and 21,845.50

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Solution

The fourth proportional to 39,750.04, 54,856.07 and 21,845.50 is: 30,147.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,750.04 : 54,856.07 = 21,845.50 : x
  2. Step 2: Convert to fraction form
    39,750.04/54,856.07 = 21,845.50/x
  3. Step 3: Cross multiply
    39,750.04x = 54,856.07 × 21,845.50
  4. Step 4: Simplify right side
    39,750.04x = 1,198,358,167.96
  5. Step 5: Solve for x
    x = 1,198,358,167.96/39,750.04
  6. Step 6: Final answer
    x = 30,147.34

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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.