Home / 12,590.94-18,888.84-4,272.39

Finding the Fourth Proportional to 12,590.94, 18,888.84 and 4,272.39

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Solution

The fourth proportional to 12,590.94, 18,888.84 and 4,272.39 is: 6,409.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.94 : 18,888.84 = 4,272.39 : x
  2. Step 2: Convert to fraction form
    12,590.94/18,888.84 = 4,272.39/x
  3. Step 3: Cross multiply
    12,590.94x = 18,888.84 × 4,272.39
  4. Step 4: Simplify right side
    12,590.94x = 80,700,491.13
  5. Step 5: Solve for x
    x = 80,700,491.13/12,590.94
  6. Step 6: Final answer
    x = 6,409.41

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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.