Home / 19,320.12-28,987.47-6,839.64

Finding the Fourth Proportional to 19,320.12, 28,987.47 and 6,839.64

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Solution

The fourth proportional to 19,320.12, 28,987.47 and 6,839.64 is: 10,262.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.12 : 28,987.47 = 6,839.64 : x
  2. Step 2: Convert to fraction form
    19,320.12/28,987.47 = 6,839.64/x
  3. Step 3: Cross multiply
    19,320.12x = 28,987.47 × 6,839.64
  4. Step 4: Simplify right side
    19,320.12x = 198,263,859.31
  5. Step 5: Solve for x
    x = 198,263,859.31/19,320.12
  6. Step 6: Final answer
    x = 10,262.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.