Home / 28,702.08-39,601.44-16,763.76

Finding the Fourth Proportional to 28,702.08, 39,601.44 and 16,763.76

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Solution

The fourth proportional to 28,702.08, 39,601.44 and 16,763.76 is: 23,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.08 : 39,601.44 = 16,763.76 : x
  2. Step 2: Convert to fraction form
    28,702.08/39,601.44 = 16,763.76/x
  3. Step 3: Cross multiply
    28,702.08x = 39,601.44 × 16,763.76
  4. Step 4: Simplify right side
    28,702.08x = 663,869,035.81
  5. Step 5: Solve for x
    x = 663,869,035.81/28,702.08
  6. Step 6: Final answer
    x = 23,129.65

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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.