Home / 15,497.88-21,387.22-8,424.32

Finding the Fourth Proportional to 15,497.88, 21,387.22 and 8,424.32

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Solution

The fourth proportional to 15,497.88, 21,387.22 and 8,424.32 is: 11,625.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.88 : 21,387.22 = 8,424.32 : x
  2. Step 2: Convert to fraction form
    15,497.88/21,387.22 = 8,424.32/x
  3. Step 3: Cross multiply
    15,497.88x = 21,387.22 × 8,424.32
  4. Step 4: Simplify right side
    15,497.88x = 180,172,785.19
  5. Step 5: Solve for x
    x = 180,172,785.19/15,497.88
  6. Step 6: Final answer
    x = 11,625.64

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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.