Home / 15,343.58-21,175.74-9,379.22

Finding the Fourth Proportional to 15,343.58, 21,175.74 and 9,379.22

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Solution

The fourth proportional to 15,343.58, 21,175.74 and 9,379.22 is: 12,944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.58 : 21,175.74 = 9,379.22 : x
  2. Step 2: Convert to fraction form
    15,343.58/21,175.74 = 9,379.22/x
  3. Step 3: Cross multiply
    15,343.58x = 21,175.74 × 9,379.22
  4. Step 4: Simplify right side
    15,343.58x = 198,611,818.24
  5. Step 5: Solve for x
    x = 198,611,818.24/15,343.58
  6. Step 6: Final answer
    x = 12,944.30

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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.