Home / 12,590.37-18,888.39-4,270.59

Finding the Fourth Proportional to 12,590.37, 18,888.39 and 4,270.59

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Solution

The fourth proportional to 12,590.37, 18,888.39 and 4,270.59 is: 6,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.37 : 18,888.39 = 4,270.59 : x
  2. Step 2: Convert to fraction form
    12,590.37/18,888.39 = 4,270.59/x
  3. Step 3: Cross multiply
    12,590.37x = 18,888.39 × 4,270.59
  4. Step 4: Simplify right side
    12,590.37x = 80,664,569.45
  5. Step 5: Solve for x
    x = 80,664,569.45/12,590.37
  6. Step 6: Final answer
    x = 6,406.85

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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.