Home / 11,947.37-16,488.12-6,642.15

Finding the Fourth Proportional to 11,947.37, 16,488.12 and 6,642.15

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Solution

The fourth proportional to 11,947.37, 16,488.12 and 6,642.15 is: 9,166.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.37 : 16,488.12 = 6,642.15 : x
  2. Step 2: Convert to fraction form
    11,947.37/16,488.12 = 6,642.15/x
  3. Step 3: Cross multiply
    11,947.37x = 16,488.12 × 6,642.15
  4. Step 4: Simplify right side
    11,947.37x = 109,516,566.26
  5. Step 5: Solve for x
    x = 109,516,566.26/11,947.37
  6. Step 6: Final answer
    x = 9,166.59

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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.