Home / 28,281.60-39,028.55-19,328.90

Finding the Fourth Proportional to 28,281.60, 39,028.55 and 19,328.90

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Solution

The fourth proportional to 28,281.60, 39,028.55 and 19,328.90 is: 26,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.60 : 39,028.55 = 19,328.90 : x
  2. Step 2: Convert to fraction form
    28,281.60/39,028.55 = 19,328.90/x
  3. Step 3: Cross multiply
    28,281.60x = 39,028.55 × 19,328.90
  4. Step 4: Simplify right side
    28,281.60x = 754,378,648.31
  5. Step 5: Solve for x
    x = 754,378,648.31/28,281.60
  6. Step 6: Final answer
    x = 26,673.83

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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.