Home / 15,488.92-21,374.81-8,415.34

Finding the Fourth Proportional to 15,488.92, 21,374.81 and 8,415.34

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Solution

The fourth proportional to 15,488.92, 21,374.81 and 8,415.34 is: 11,613.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.92 : 21,374.81 = 8,415.34 : x
  2. Step 2: Convert to fraction form
    15,488.92/21,374.81 = 8,415.34/x
  3. Step 3: Cross multiply
    15,488.92x = 21,374.81 × 8,415.34
  4. Step 4: Simplify right side
    15,488.92x = 179,876,293.59
  5. Step 5: Solve for x
    x = 179,876,293.59/15,488.92
  6. Step 6: Final answer
    x = 11,613.22

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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.