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Finding the Fourth Proportional to 18,357.80, 25,330.13 and 10,804.45

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Solution

The fourth proportional to 18,357.80, 25,330.13 and 10,804.45 is: 14,908.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.80 : 25,330.13 = 10,804.45 : x
  2. Step 2: Convert to fraction form
    18,357.80/25,330.13 = 10,804.45/x
  3. Step 3: Cross multiply
    18,357.80x = 25,330.13 × 10,804.45
  4. Step 4: Simplify right side
    18,357.80x = 273,678,123.08
  5. Step 5: Solve for x
    x = 273,678,123.08/18,357.80
  6. Step 6: Final answer
    x = 14,908.00

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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.