Home / 15,908.04-21,948.66-9,945.78

Finding the Fourth Proportional to 15,908.04, 21,948.66 and 9,945.78

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Solution

The fourth proportional to 15,908.04, 21,948.66 and 9,945.78 is: 13,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,908.04 : 21,948.66 = 9,945.78 : x
  2. Step 2: Convert to fraction form
    15,908.04/21,948.66 = 9,945.78/x
  3. Step 3: Cross multiply
    15,908.04x = 21,948.66 × 9,945.78
  4. Step 4: Simplify right side
    15,908.04x = 218,296,543.65
  5. Step 5: Solve for x
    x = 218,296,543.65/15,908.04
  6. Step 6: Final answer
    x = 13,722.40

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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.