Home / 11,355.93-15,671.88-6,640.92

Finding the Fourth Proportional to 11,355.93, 15,671.88 and 6,640.92

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Solution

The fourth proportional to 11,355.93, 15,671.88 and 6,640.92 is: 9,164.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.93 : 15,671.88 = 6,640.92 : x
  2. Step 2: Convert to fraction form
    11,355.93/15,671.88 = 6,640.92/x
  3. Step 3: Cross multiply
    11,355.93x = 15,671.88 × 6,640.92
  4. Step 4: Simplify right side
    11,355.93x = 104,075,701.33
  5. Step 5: Solve for x
    x = 104,075,701.33/11,355.93
  6. Step 6: Final answer
    x = 9,164.88

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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.