Home / 28,520.19-39,344.77-18,451.87

Finding the Fourth Proportional to 28,520.19, 39,344.77 and 18,451.87

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Solution

The fourth proportional to 28,520.19, 39,344.77 and 18,451.87 is: 25,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.19 : 39,344.77 = 18,451.87 : x
  2. Step 2: Convert to fraction form
    28,520.19/39,344.77 = 18,451.87/x
  3. Step 3: Cross multiply
    28,520.19x = 39,344.77 × 18,451.87
  4. Step 4: Simplify right side
    28,520.19x = 725,984,581.22
  5. Step 5: Solve for x
    x = 725,984,581.22/28,520.19
  6. Step 6: Final answer
    x = 25,455.11

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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.