Home / 28,560.83-39,408.48-18,487.87

Finding the Fourth Proportional to 28,560.83, 39,408.48 and 18,487.87

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Solution

The fourth proportional to 28,560.83, 39,408.48 and 18,487.87 is: 25,509.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.83 : 39,408.48 = 18,487.87 : x
  2. Step 2: Convert to fraction form
    28,560.83/39,408.48 = 18,487.87/x
  3. Step 3: Cross multiply
    28,560.83x = 39,408.48 × 18,487.87
  4. Step 4: Simplify right side
    28,560.83x = 728,578,855.14
  5. Step 5: Solve for x
    x = 728,578,855.14/28,560.83
  6. Step 6: Final answer
    x = 25,509.72

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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.