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Finding the Fourth Proportional to 19,002.06, 28,507.95 and 7,905.06

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Solution

The fourth proportional to 19,002.06, 28,507.95 and 7,905.06 is: 11,859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,002.06 : 28,507.95 = 7,905.06 : x
  2. Step 2: Convert to fraction form
    19,002.06/28,507.95 = 7,905.06/x
  3. Step 3: Cross multiply
    19,002.06x = 28,507.95 × 7,905.06
  4. Step 4: Simplify right side
    19,002.06x = 225,357,055.23
  5. Step 5: Solve for x
    x = 225,357,055.23/19,002.06
  6. Step 6: Final answer
    x = 11,859.61

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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.