Home / 28,358.54-39,138.72-16,425.62

Finding the Fourth Proportional to 28,358.54, 39,138.72 and 16,425.62

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Solution

The fourth proportional to 28,358.54, 39,138.72 and 16,425.62 is: 22,669.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.54 : 39,138.72 = 16,425.62 : x
  2. Step 2: Convert to fraction form
    28,358.54/39,138.72 = 16,425.62/x
  3. Step 3: Cross multiply
    28,358.54x = 39,138.72 × 16,425.62
  4. Step 4: Simplify right side
    28,358.54x = 642,877,742.01
  5. Step 5: Solve for x
    x = 642,877,742.01/28,358.54
  6. Step 6: Final answer
    x = 22,669.63

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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.