Home / 11,490.29-15,856.58-6,454.65

Finding the Fourth Proportional to 11,490.29, 15,856.58 and 6,454.65

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Solution

The fourth proportional to 11,490.29, 15,856.58 and 6,454.65 is: 8,907.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.29 : 15,856.58 = 6,454.65 : x
  2. Step 2: Convert to fraction form
    11,490.29/15,856.58 = 6,454.65/x
  3. Step 3: Cross multiply
    11,490.29x = 15,856.58 × 6,454.65
  4. Step 4: Simplify right side
    11,490.29x = 102,348,641.82
  5. Step 5: Solve for x
    x = 102,348,641.82/11,490.29
  6. Step 6: Final answer
    x = 8,907.41

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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.