Home / 13,607.91-18,778.55-7,557.97

Finding the Fourth Proportional to 13,607.91, 18,778.55 and 7,557.97

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Solution

The fourth proportional to 13,607.91, 18,778.55 and 7,557.97 is: 10,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.91 : 18,778.55 = 7,557.97 : x
  2. Step 2: Convert to fraction form
    13,607.91/18,778.55 = 7,557.97/x
  3. Step 3: Cross multiply
    13,607.91x = 18,778.55 × 7,557.97
  4. Step 4: Simplify right side
    13,607.91x = 141,927,623.65
  5. Step 5: Solve for x
    x = 141,927,623.65/13,607.91
  6. Step 6: Final answer
    x = 10,429.79

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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.