Home / 27,906.25-38,510.64-15,331.81

Finding the Fourth Proportional to 27,906.25, 38,510.64 and 15,331.81

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Solution

The fourth proportional to 27,906.25, 38,510.64 and 15,331.81 is: 21,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.25 : 38,510.64 = 15,331.81 : x
  2. Step 2: Convert to fraction form
    27,906.25/38,510.64 = 15,331.81/x
  3. Step 3: Cross multiply
    27,906.25x = 38,510.64 × 15,331.81
  4. Step 4: Simplify right side
    27,906.25x = 590,437,815.46
  5. Step 5: Solve for x
    x = 590,437,815.46/27,906.25
  6. Step 6: Final answer
    x = 21,157.91

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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.