Home / 15,578.29-21,498.50-8,505.17

Finding the Fourth Proportional to 15,578.29, 21,498.50 and 8,505.17

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Solution

The fourth proportional to 15,578.29, 21,498.50 and 8,505.17 is: 11,737.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.29 : 21,498.50 = 8,505.17 : x
  2. Step 2: Convert to fraction form
    15,578.29/21,498.50 = 8,505.17/x
  3. Step 3: Cross multiply
    15,578.29x = 21,498.50 × 8,505.17
  4. Step 4: Simplify right side
    15,578.29x = 182,848,354.72
  5. Step 5: Solve for x
    x = 182,848,354.72/15,578.29
  6. Step 6: Final answer
    x = 11,737.38

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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.