Home / 28,233.77-42,323.11-13,438.71

Finding the Fourth Proportional to 28,233.77, 42,323.11 and 13,438.71

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Solution

The fourth proportional to 28,233.77, 42,323.11 and 13,438.71 is: 20,144.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,233.77 : 42,323.11 = 13,438.71 : x
  2. Step 2: Convert to fraction form
    28,233.77/42,323.11 = 13,438.71/x
  3. Step 3: Cross multiply
    28,233.77x = 42,323.11 × 13,438.71
  4. Step 4: Simplify right side
    28,233.77x = 568,767,967.99
  5. Step 5: Solve for x
    x = 568,767,967.99/28,233.77
  6. Step 6: Final answer
    x = 20,144.96

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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.