Home / 15,020.56-20,721.48-9,717.09

Finding the Fourth Proportional to 15,020.56, 20,721.48 and 9,717.09

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Solution

The fourth proportional to 15,020.56, 20,721.48 and 9,717.09 is: 13,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.56 : 20,721.48 = 9,717.09 : x
  2. Step 2: Convert to fraction form
    15,020.56/20,721.48 = 9,717.09/x
  3. Step 3: Cross multiply
    15,020.56x = 20,721.48 × 9,717.09
  4. Step 4: Simplify right side
    15,020.56x = 201,352,486.09
  5. Step 5: Solve for x
    x = 201,352,486.09/15,020.56
  6. Step 6: Final answer
    x = 13,405.13

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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.