Home / 12,557.89-18,838.32-4,238.74

Finding the Fourth Proportional to 12,557.89, 18,838.32 and 4,238.74

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Solution

The fourth proportional to 12,557.89, 18,838.32 and 4,238.74 is: 6,358.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,557.89 : 18,838.32 = 4,238.74 : x
  2. Step 2: Convert to fraction form
    12,557.89/18,838.32 = 4,238.74/x
  3. Step 3: Cross multiply
    12,557.89x = 18,838.32 × 4,238.74
  4. Step 4: Simplify right side
    12,557.89x = 79,850,740.52
  5. Step 5: Solve for x
    x = 79,850,740.52/12,557.89
  6. Step 6: Final answer
    x = 6,358.61

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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.