Home / 28,389.84-42,544.60-15,745.20

Finding the Fourth Proportional to 28,389.84, 42,544.60 and 15,745.20

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Solution

The fourth proportional to 28,389.84, 42,544.60 and 15,745.20 is: 23,595.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.84 : 42,544.60 = 15,745.20 : x
  2. Step 2: Convert to fraction form
    28,389.84/42,544.60 = 15,745.20/x
  3. Step 3: Cross multiply
    28,389.84x = 42,544.60 × 15,745.20
  4. Step 4: Simplify right side
    28,389.84x = 669,873,235.92
  5. Step 5: Solve for x
    x = 669,873,235.92/28,389.84
  6. Step 6: Final answer
    x = 23,595.53

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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.