Home / 14,717.49-20,309.61-8,428.65

Finding the Fourth Proportional to 14,717.49, 20,309.61 and 8,428.65

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Solution

The fourth proportional to 14,717.49, 20,309.61 and 8,428.65 is: 11,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,717.49 : 20,309.61 = 8,428.65 : x
  2. Step 2: Convert to fraction form
    14,717.49/20,309.61 = 8,428.65/x
  3. Step 3: Cross multiply
    14,717.49x = 20,309.61 × 8,428.65
  4. Step 4: Simplify right side
    14,717.49x = 171,182,594.33
  5. Step 5: Solve for x
    x = 171,182,594.33/14,717.49
  6. Step 6: Final answer
    x = 11,631.24

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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.