Home / 15,379.03-21,223.14-8,664.77

Finding the Fourth Proportional to 15,379.03, 21,223.14 and 8,664.77

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Solution

The fourth proportional to 15,379.03, 21,223.14 and 8,664.77 is: 11,957.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.03 : 21,223.14 = 8,664.77 : x
  2. Step 2: Convert to fraction form
    15,379.03/21,223.14 = 8,664.77/x
  3. Step 3: Cross multiply
    15,379.03x = 21,223.14 × 8,664.77
  4. Step 4: Simplify right side
    15,379.03x = 183,893,488.17
  5. Step 5: Solve for x
    x = 183,893,488.17/15,379.03
  6. Step 6: Final answer
    x = 11,957.42

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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.