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Finding the Fourth Proportional to 18,393.61, 25,392.18 and 12,341.69

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Solution

The fourth proportional to 18,393.61, 25,392.18 and 12,341.69 is: 17,037.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.61 : 25,392.18 = 12,341.69 : x
  2. Step 2: Convert to fraction form
    18,393.61/25,392.18 = 12,341.69/x
  3. Step 3: Cross multiply
    18,393.61x = 25,392.18 × 12,341.69
  4. Step 4: Simplify right side
    18,393.61x = 313,382,300.21
  5. Step 5: Solve for x
    x = 313,382,300.21/18,393.61
  6. Step 6: Final answer
    x = 17,037.56

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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.