Home / 28,423.38-39,187.71-19,455.42

Finding the Fourth Proportional to 28,423.38, 39,187.71 and 19,455.42

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Solution

The fourth proportional to 28,423.38, 39,187.71 and 19,455.42 is: 26,823.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.38 : 39,187.71 = 19,455.42 : x
  2. Step 2: Convert to fraction form
    28,423.38/39,187.71 = 19,455.42/x
  3. Step 3: Cross multiply
    28,423.38x = 39,187.71 × 19,455.42
  4. Step 4: Simplify right side
    28,423.38x = 762,413,356.89
  5. Step 5: Solve for x
    x = 762,413,356.89/28,423.38
  6. Step 6: Final answer
    x = 26,823.46

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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.