Home / 39,756.37-54,865.20-21,852.13

Finding the Fourth Proportional to 39,756.37, 54,865.20 and 21,852.13

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Solution

The fourth proportional to 39,756.37, 54,865.20 and 21,852.13 is: 30,156.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.37 : 54,865.20 = 21,852.13 : x
  2. Step 2: Convert to fraction form
    39,756.37/54,865.20 = 21,852.13/x
  3. Step 3: Cross multiply
    39,756.37x = 54,865.20 × 21,852.13
  4. Step 4: Simplify right side
    39,756.37x = 1,198,921,482.88
  5. Step 5: Solve for x
    x = 1,198,921,482.88/39,756.37
  6. Step 6: Final answer
    x = 30,156.71

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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.