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Finding the Fourth Proportional to 18,393.45, 25,384.83 and 10,842.12

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Solution

The fourth proportional to 18,393.45, 25,384.83 and 10,842.12 is: 14,963.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.45 : 25,384.83 = 10,842.12 : x
  2. Step 2: Convert to fraction form
    18,393.45/25,384.83 = 10,842.12/x
  3. Step 3: Cross multiply
    18,393.45x = 25,384.83 × 10,842.12
  4. Step 4: Simplify right side
    18,393.45x = 275,225,373.04
  5. Step 5: Solve for x
    x = 275,225,373.04/18,393.45
  6. Step 6: Final answer
    x = 14,963.23

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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.