Home / 15,445.80-21,315.24-8,372.19

Finding the Fourth Proportional to 15,445.80, 21,315.24 and 8,372.19

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Solution

The fourth proportional to 15,445.80, 21,315.24 and 8,372.19 is: 11,553.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.80 : 21,315.24 = 8,372.19 : x
  2. Step 2: Convert to fraction form
    15,445.80/21,315.24 = 8,372.19/x
  3. Step 3: Cross multiply
    15,445.80x = 21,315.24 × 8,372.19
  4. Step 4: Simplify right side
    15,445.80x = 178,455,239.18
  5. Step 5: Solve for x
    x = 178,455,239.18/15,445.80
  6. Step 6: Final answer
    x = 11,553.64

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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.