Home / 27,787.72-38,347.06-15,212.47

Finding the Fourth Proportional to 27,787.72, 38,347.06 and 15,212.47

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Solution

The fourth proportional to 27,787.72, 38,347.06 and 15,212.47 is: 20,993.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.72 : 38,347.06 = 15,212.47 : x
  2. Step 2: Convert to fraction form
    27,787.72/38,347.06 = 15,212.47/x
  3. Step 3: Cross multiply
    27,787.72x = 38,347.06 × 15,212.47
  4. Step 4: Simplify right side
    27,787.72x = 583,353,423.78
  5. Step 5: Solve for x
    x = 583,353,423.78/27,787.72
  6. Step 6: Final answer
    x = 20,993.21

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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.