Home / 15,702.39-21,669.17-8,628.93

Finding the Fourth Proportional to 15,702.39, 21,669.17 and 8,628.93

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Solution

The fourth proportional to 15,702.39, 21,669.17 and 8,628.93 is: 11,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.39 : 21,669.17 = 8,628.93 : x
  2. Step 2: Convert to fraction form
    15,702.39/21,669.17 = 8,628.93/x
  3. Step 3: Cross multiply
    15,702.39x = 21,669.17 × 8,628.93
  4. Step 4: Simplify right side
    15,702.39x = 186,981,707.94
  5. Step 5: Solve for x
    x = 186,981,707.94/15,702.39
  6. Step 6: Final answer
    x = 11,907.85

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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.