Home / 15,293.67-21,108.14-9,979.26

Finding the Fourth Proportional to 15,293.67, 21,108.14 and 9,979.26

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Solution

The fourth proportional to 15,293.67, 21,108.14 and 9,979.26 is: 13,773.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,293.67 : 21,108.14 = 9,979.26 : x
  2. Step 2: Convert to fraction form
    15,293.67/21,108.14 = 9,979.26/x
  3. Step 3: Cross multiply
    15,293.67x = 21,108.14 × 9,979.26
  4. Step 4: Simplify right side
    15,293.67x = 210,643,641.05
  5. Step 5: Solve for x
    x = 210,643,641.05/15,293.67
  6. Step 6: Final answer
    x = 13,773.26

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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.