Home / 13,317.79-18,377.92-7,648.54

Finding the Fourth Proportional to 13,317.79, 18,377.92 and 7,648.54

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Solution

The fourth proportional to 13,317.79, 18,377.92 and 7,648.54 is: 10,554.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.79 : 18,377.92 = 7,648.54 : x
  2. Step 2: Convert to fraction form
    13,317.79/18,377.92 = 7,648.54/x
  3. Step 3: Cross multiply
    13,317.79x = 18,377.92 × 7,648.54
  4. Step 4: Simplify right side
    13,317.79x = 140,564,210.29
  5. Step 5: Solve for x
    x = 140,564,210.29/13,317.79
  6. Step 6: Final answer
    x = 10,554.62

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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.