Home / 15,578.85-21,498.80-8,505.27

Finding the Fourth Proportional to 15,578.85, 21,498.80 and 8,505.27

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Solution

The fourth proportional to 15,578.85, 21,498.80 and 8,505.27 is: 11,737.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.85 : 21,498.80 = 8,505.27 : x
  2. Step 2: Convert to fraction form
    15,578.85/21,498.80 = 8,505.27/x
  3. Step 3: Cross multiply
    15,578.85x = 21,498.80 × 8,505.27
  4. Step 4: Simplify right side
    15,578.85x = 182,853,056.15
  5. Step 5: Solve for x
    x = 182,853,056.15/15,578.85
  6. Step 6: Final answer
    x = 11,737.26

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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.