Home / 15,339.46-21,169.68-8,625.40

Finding the Fourth Proportional to 15,339.46, 21,169.68 and 8,625.40

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Solution

The fourth proportional to 15,339.46, 21,169.68 and 8,625.40 is: 11,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.46 : 21,169.68 = 8,625.40 : x
  2. Step 2: Convert to fraction form
    15,339.46/21,169.68 = 8,625.40/x
  3. Step 3: Cross multiply
    15,339.46x = 21,169.68 × 8,625.40
  4. Step 4: Simplify right side
    15,339.46x = 182,596,957.87
  5. Step 5: Solve for x
    x = 182,596,957.87/15,339.46
  6. Step 6: Final answer
    x = 11,903.74

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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.