Home / 28,397.79-39,197.12-18,993.69

Finding the Fourth Proportional to 28,397.79, 39,197.12 and 18,993.69

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Solution

The fourth proportional to 28,397.79, 39,197.12 and 18,993.69 is: 26,216.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.79 : 39,197.12 = 18,993.69 : x
  2. Step 2: Convert to fraction form
    28,397.79/39,197.12 = 18,993.69/x
  3. Step 3: Cross multiply
    28,397.79x = 39,197.12 × 18,993.69
  4. Step 4: Simplify right side
    28,397.79x = 744,497,851.20
  5. Step 5: Solve for x
    x = 744,497,851.20/28,397.79
  6. Step 6: Final answer
    x = 26,216.75

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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.