Home / 11,364.82-15,688.29-7,640.98

Finding the Fourth Proportional to 11,364.82, 15,688.29 and 7,640.98

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Solution

The fourth proportional to 11,364.82, 15,688.29 and 7,640.98 is: 10,547.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,364.82 : 15,688.29 = 7,640.98 : x
  2. Step 2: Convert to fraction form
    11,364.82/15,688.29 = 7,640.98/x
  3. Step 3: Cross multiply
    11,364.82x = 15,688.29 × 7,640.98
  4. Step 4: Simplify right side
    11,364.82x = 119,873,910.12
  5. Step 5: Solve for x
    x = 119,873,910.12/11,364.82
  6. Step 6: Final answer
    x = 10,547.81

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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.