Home / 27,905.70-38,510.13-15,159

Finding the Fourth Proportional to 27,905.70, 38,510.13 and 15,159

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Solution

The fourth proportional to 27,905.70, 38,510.13 and 15,159 is: 20,919.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.70 : 38,510.13 = 15,159 : x
  2. Step 2: Convert to fraction form
    27,905.70/38,510.13 = 15,159/x
  3. Step 3: Cross multiply
    27,905.70x = 38,510.13 × 15,159
  4. Step 4: Simplify right side
    27,905.70x = 583,775,060.67
  5. Step 5: Solve for x
    x = 583,775,060.67/27,905.70
  6. Step 6: Final answer
    x = 20,919.56

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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.