Home / 15,285.56-21,086.31-9,983.48

Finding the Fourth Proportional to 15,285.56, 21,086.31 and 9,983.48

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Solution

The fourth proportional to 15,285.56, 21,086.31 and 9,983.48 is: 13,772.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.56 : 21,086.31 = 9,983.48 : x
  2. Step 2: Convert to fraction form
    15,285.56/21,086.31 = 9,983.48/x
  3. Step 3: Cross multiply
    15,285.56x = 21,086.31 × 9,983.48
  4. Step 4: Simplify right side
    15,285.56x = 210,514,754.16
  5. Step 5: Solve for x
    x = 210,514,754.16/15,285.56
  6. Step 6: Final answer
    x = 13,772.13

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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.