Home / 15,465.94-21,342.79-8,392.61

Finding the Fourth Proportional to 15,465.94, 21,342.79 and 8,392.61

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Solution

The fourth proportional to 15,465.94, 21,342.79 and 8,392.61 is: 11,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.94 : 21,342.79 = 8,392.61 : x
  2. Step 2: Convert to fraction form
    15,465.94/21,342.79 = 8,392.61/x
  3. Step 3: Cross multiply
    15,465.94x = 21,342.79 × 8,392.61
  4. Step 4: Simplify right side
    15,465.94x = 179,121,776.63
  5. Step 5: Solve for x
    x = 179,121,776.63/15,465.94
  6. Step 6: Final answer
    x = 11,581.70

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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.