Home / 28,425.84-39,225.24-15,847.92

Finding the Fourth Proportional to 28,425.84, 39,225.24 and 15,847.92

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Solution

The fourth proportional to 28,425.84, 39,225.24 and 15,847.92 is: 21,868.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.84 : 39,225.24 = 15,847.92 : x
  2. Step 2: Convert to fraction form
    28,425.84/39,225.24 = 15,847.92/x
  3. Step 3: Cross multiply
    28,425.84x = 39,225.24 × 15,847.92
  4. Step 4: Simplify right side
    28,425.84x = 621,638,465.50
  5. Step 5: Solve for x
    x = 621,638,465.50/28,425.84
  6. Step 6: Final answer
    x = 21,868.78

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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.