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Finding the Fourth Proportional to 18,485.92, 25,510 and 10,529.28

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Solution

The fourth proportional to 18,485.92, 25,510 and 10,529.28 is: 14,530.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.92 : 25,510 = 10,529.28 : x
  2. Step 2: Convert to fraction form
    18,485.92/25,510 = 10,529.28/x
  3. Step 3: Cross multiply
    18,485.92x = 25,510 × 10,529.28
  4. Step 4: Simplify right side
    18,485.92x = 268,601,932.80
  5. Step 5: Solve for x
    x = 268,601,932.80/18,485.92
  6. Step 6: Final answer
    x = 14,530.08

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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.