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Finding the Fourth Proportional to 18,900.99, 28,362.47 and 10,468.35

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Solution

The fourth proportional to 18,900.99, 28,362.47 and 10,468.35 is: 15,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.99 : 28,362.47 = 10,468.35 : x
  2. Step 2: Convert to fraction form
    18,900.99/28,362.47 = 10,468.35/x
  3. Step 3: Cross multiply
    18,900.99x = 28,362.47 × 10,468.35
  4. Step 4: Simplify right side
    18,900.99x = 296,908,262.82
  5. Step 5: Solve for x
    x = 296,908,262.82/18,900.99
  6. Step 6: Final answer
    x = 15,708.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.