Home / 15,578.98-21,499.36-8,505.45

Finding the Fourth Proportional to 15,578.98, 21,499.36 and 8,505.45

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Solution

The fourth proportional to 15,578.98, 21,499.36 and 8,505.45 is: 11,737.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.98 : 21,499.36 = 8,505.45 : x
  2. Step 2: Convert to fraction form
    15,578.98/21,499.36 = 8,505.45/x
  3. Step 3: Cross multiply
    15,578.98x = 21,499.36 × 8,505.45
  4. Step 4: Simplify right side
    15,578.98x = 182,861,710.25
  5. Step 5: Solve for x
    x = 182,861,710.25/15,578.98
  6. Step 6: Final answer
    x = 11,737.72

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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.