Home / 39,889.54-55,065.76-28,411.84

Finding the Fourth Proportional to 39,889.54, 55,065.76 and 28,411.84

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Solution

The fourth proportional to 39,889.54, 55,065.76 and 28,411.84 is: 39,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.54 : 55,065.76 = 28,411.84 : x
  2. Step 2: Convert to fraction form
    39,889.54/55,065.76 = 28,411.84/x
  3. Step 3: Cross multiply
    39,889.54x = 55,065.76 × 28,411.84
  4. Step 4: Simplify right side
    39,889.54x = 1,564,519,560.40
  5. Step 5: Solve for x
    x = 1,564,519,560.40/39,889.54
  6. Step 6: Final answer
    x = 39,221.30

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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.