Home / 28,568.40-39,411.26-18,500.20

Finding the Fourth Proportional to 28,568.40, 39,411.26 and 18,500.20

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Solution

The fourth proportional to 28,568.40, 39,411.26 and 18,500.20 is: 25,521.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.40 : 39,411.26 = 18,500.20 : x
  2. Step 2: Convert to fraction form
    28,568.40/39,411.26 = 18,500.20/x
  3. Step 3: Cross multiply
    28,568.40x = 39,411.26 × 18,500.20
  4. Step 4: Simplify right side
    28,568.40x = 729,116,070.60
  5. Step 5: Solve for x
    x = 729,116,070.60/28,568.40
  6. Step 6: Final answer
    x = 25,521.77

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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.