Home / 10,299.47-15,450.42-7,718.81

Finding the Fourth Proportional to 10,299.47, 15,450.42 and 7,718.81

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Solution

The fourth proportional to 10,299.47, 15,450.42 and 7,718.81 is: 11,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,299.47 : 15,450.42 = 7,718.81 : x
  2. Step 2: Convert to fraction form
    10,299.47/15,450.42 = 7,718.81/x
  3. Step 3: Cross multiply
    10,299.47x = 15,450.42 × 7,718.81
  4. Step 4: Simplify right side
    10,299.47x = 119,258,856.40
  5. Step 5: Solve for x
    x = 119,258,856.40/10,299.47
  6. Step 6: Final answer
    x = 11,579.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.