Home / 39,756.32-54,865.15-21,852.99

Finding the Fourth Proportional to 39,756.32, 54,865.15 and 21,852.99

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Solution

The fourth proportional to 39,756.32, 54,865.15 and 21,852.99 is: 30,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.32 : 54,865.15 = 21,852.99 : x
  2. Step 2: Convert to fraction form
    39,756.32/54,865.15 = 21,852.99/x
  3. Step 3: Cross multiply
    39,756.32x = 54,865.15 × 21,852.99
  4. Step 4: Simplify right side
    39,756.32x = 1,198,967,519.67
  5. Step 5: Solve for x
    x = 1,198,967,519.67/39,756.32
  6. Step 6: Final answer
    x = 30,157.91

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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.