Home / 27,719.56-38,248.58-15,783.12

Finding the Fourth Proportional to 27,719.56, 38,248.58 and 15,783.12

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Solution

The fourth proportional to 27,719.56, 38,248.58 and 15,783.12 is: 21,778.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,719.56 : 38,248.58 = 15,783.12 : x
  2. Step 2: Convert to fraction form
    27,719.56/38,248.58 = 15,783.12/x
  3. Step 3: Cross multiply
    27,719.56x = 38,248.58 × 15,783.12
  4. Step 4: Simplify right side
    27,719.56x = 603,681,927.97
  5. Step 5: Solve for x
    x = 603,681,927.97/27,719.56
  6. Step 6: Final answer
    x = 21,778.19

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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.