Home / 39,660.90-54,733.56-21,756.66

Finding the Fourth Proportional to 39,660.90, 54,733.56 and 21,756.66

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Solution

The fourth proportional to 39,660.90, 54,733.56 and 21,756.66 is: 30,025.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.90 : 54,733.56 = 21,756.66 : x
  2. Step 2: Convert to fraction form
    39,660.90/54,733.56 = 21,756.66/x
  3. Step 3: Cross multiply
    39,660.90x = 54,733.56 × 21,756.66
  4. Step 4: Simplify right side
    39,660.90x = 1,190,819,455.51
  5. Step 5: Solve for x
    x = 1,190,819,455.51/39,660.90
  6. Step 6: Final answer
    x = 30,025.02

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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.