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Finding the Fourth Proportional to 19,009.65, 28,499.07 and 7,924.65

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Solution

The fourth proportional to 19,009.65, 28,499.07 and 7,924.65 is: 11,880.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.65 : 28,499.07 = 7,924.65 : x
  2. Step 2: Convert to fraction form
    19,009.65/28,499.07 = 7,924.65/x
  3. Step 3: Cross multiply
    19,009.65x = 28,499.07 × 7,924.65
  4. Step 4: Simplify right side
    19,009.65x = 225,845,155.08
  5. Step 5: Solve for x
    x = 225,845,155.08/19,009.65
  6. Step 6: Final answer
    x = 11,880.55

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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.