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Finding the Fourth Proportional to 29,005.40, 40,020.78 and 17,064.20

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Solution

The fourth proportional to 29,005.40, 40,020.78 and 17,064.20 is: 23,544.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,005.40 : 40,020.78 = 17,064.20 : x
  2. Step 2: Convert to fraction form
    29,005.40/40,020.78 = 17,064.20/x
  3. Step 3: Cross multiply
    29,005.40x = 40,020.78 × 17,064.20
  4. Step 4: Simplify right side
    29,005.40x = 682,922,594.08
  5. Step 5: Solve for x
    x = 682,922,594.08/29,005.40
  6. Step 6: Final answer
    x = 23,544.67

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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.