Home / 15,329.63-21,154.16-8,956.55

Finding the Fourth Proportional to 15,329.63, 21,154.16 and 8,956.55

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Solution

The fourth proportional to 15,329.63, 21,154.16 and 8,956.55 is: 12,359.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.63 : 21,154.16 = 8,956.55 : x
  2. Step 2: Convert to fraction form
    15,329.63/21,154.16 = 8,956.55/x
  3. Step 3: Cross multiply
    15,329.63x = 21,154.16 × 8,956.55
  4. Step 4: Simplify right side
    15,329.63x = 189,468,141.19
  5. Step 5: Solve for x
    x = 189,468,141.19/15,329.63
  6. Step 6: Final answer
    x = 12,359.61

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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.