Home / 15,722.04-21,696.32-8,917.35

Finding the Fourth Proportional to 15,722.04, 21,696.32 and 8,917.35

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Solution

The fourth proportional to 15,722.04, 21,696.32 and 8,917.35 is: 12,305.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.04 : 21,696.32 = 8,917.35 : x
  2. Step 2: Convert to fraction form
    15,722.04/21,696.32 = 8,917.35/x
  3. Step 3: Cross multiply
    15,722.04x = 21,696.32 × 8,917.35
  4. Step 4: Simplify right side
    15,722.04x = 193,473,634.57
  5. Step 5: Solve for x
    x = 193,473,634.57/15,722.04
  6. Step 6: Final answer
    x = 12,305.89

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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.