Home / 28,378.40-39,166.80-17,205.92

Finding the Fourth Proportional to 28,378.40, 39,166.80 and 17,205.92

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Solution

The fourth proportional to 28,378.40, 39,166.80 and 17,205.92 is: 23,746.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378.40 : 39,166.80 = 17,205.92 : x
  2. Step 2: Convert to fraction form
    28,378.40/39,166.80 = 17,205.92/x
  3. Step 3: Cross multiply
    28,378.40x = 39,166.80 × 17,205.92
  4. Step 4: Simplify right side
    28,378.40x = 673,900,827.46
  5. Step 5: Solve for x
    x = 673,900,827.46/28,378.40
  6. Step 6: Final answer
    x = 23,746.96

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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.