Home / 28,555.83-39,424.91-18,351

Finding the Fourth Proportional to 28,555.83, 39,424.91 and 18,351

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Solution

The fourth proportional to 28,555.83, 39,424.91 and 18,351 is: 25,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.83 : 39,424.91 = 18,351 : x
  2. Step 2: Convert to fraction form
    28,555.83/39,424.91 = 18,351/x
  3. Step 3: Cross multiply
    28,555.83x = 39,424.91 × 18,351
  4. Step 4: Simplify right side
    28,555.83x = 723,486,431.66
  5. Step 5: Solve for x
    x = 723,486,431.66/28,555.83
  6. Step 6: Final answer
    x = 25,335.86

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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.