Home / 15,565.84-21,480.78-8,492.56

Finding the Fourth Proportional to 15,565.84, 21,480.78 and 8,492.56

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Solution

The fourth proportional to 15,565.84, 21,480.78 and 8,492.56 is: 11,719.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.84 : 21,480.78 = 8,492.56 : x
  2. Step 2: Convert to fraction form
    15,565.84/21,480.78 = 8,492.56/x
  3. Step 3: Cross multiply
    15,565.84x = 21,480.78 × 8,492.56
  4. Step 4: Simplify right side
    15,565.84x = 182,426,813.00
  5. Step 5: Solve for x
    x = 182,426,813.00/15,565.84
  6. Step 6: Final answer
    x = 11,719.69

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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.