Home / 14,439.79-19,924.81-8,470.09

Finding the Fourth Proportional to 14,439.79, 19,924.81 and 8,470.09

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Solution

The fourth proportional to 14,439.79, 19,924.81 and 8,470.09 is: 11,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,439.79 : 19,924.81 = 8,470.09 : x
  2. Step 2: Convert to fraction form
    14,439.79/19,924.81 = 8,470.09/x
  3. Step 3: Cross multiply
    14,439.79x = 19,924.81 × 8,470.09
  4. Step 4: Simplify right side
    14,439.79x = 168,764,933.93
  5. Step 5: Solve for x
    x = 168,764,933.93/14,439.79
  6. Step 6: Final answer
    x = 11,687.49

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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.