Home / 15,310.36-21,129.09-8,595.64

Finding the Fourth Proportional to 15,310.36, 21,129.09 and 8,595.64

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Solution

The fourth proportional to 15,310.36, 21,129.09 and 8,595.64 is: 11,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.36 : 21,129.09 = 8,595.64 : x
  2. Step 2: Convert to fraction form
    15,310.36/21,129.09 = 8,595.64/x
  3. Step 3: Cross multiply
    15,310.36x = 21,129.09 × 8,595.64
  4. Step 4: Simplify right side
    15,310.36x = 181,618,051.17
  5. Step 5: Solve for x
    x = 181,618,051.17/15,310.36
  6. Step 6: Final answer
    x = 11,862.43

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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.