Home / 15,326.37-21,145.29-8,611.06

Finding the Fourth Proportional to 15,326.37, 21,145.29 and 8,611.06

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Solution

The fourth proportional to 15,326.37, 21,145.29 and 8,611.06 is: 11,880.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.37 : 21,145.29 = 8,611.06 : x
  2. Step 2: Convert to fraction form
    15,326.37/21,145.29 = 8,611.06/x
  3. Step 3: Cross multiply
    15,326.37x = 21,145.29 × 8,611.06
  4. Step 4: Simplify right side
    15,326.37x = 182,083,360.91
  5. Step 5: Solve for x
    x = 182,083,360.91/15,326.37
  6. Step 6: Final answer
    x = 11,880.40

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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.