Home / 27,783.92-38,342.28-15,209.36

Finding the Fourth Proportional to 27,783.92, 38,342.28 and 15,209.36

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Solution

The fourth proportional to 27,783.92, 38,342.28 and 15,209.36 is: 20,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,783.92 : 38,342.28 = 15,209.36 : x
  2. Step 2: Convert to fraction form
    27,783.92/38,342.28 = 15,209.36/x
  3. Step 3: Cross multiply
    27,783.92x = 38,342.28 × 15,209.36
  4. Step 4: Simplify right side
    27,783.92x = 583,161,539.74
  5. Step 5: Solve for x
    x = 583,161,539.74/27,783.92
  6. Step 6: Final answer
    x = 20,989.17

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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.