Home / 15,660.47-21,612.44-10,345.97

Finding the Fourth Proportional to 15,660.47, 21,612.44 and 10,345.97

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Solution

The fourth proportional to 15,660.47, 21,612.44 and 10,345.97 is: 14,278.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.47 : 21,612.44 = 10,345.97 : x
  2. Step 2: Convert to fraction form
    15,660.47/21,612.44 = 10,345.97/x
  3. Step 3: Cross multiply
    15,660.47x = 21,612.44 × 10,345.97
  4. Step 4: Simplify right side
    15,660.47x = 223,601,655.87
  5. Step 5: Solve for x
    x = 223,601,655.87/15,660.47
  6. Step 6: Final answer
    x = 14,278.09

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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.