Home / 18,935.90-28,400.13-6,456.62

Finding the Fourth Proportional to 18,935.90, 28,400.13 and 6,456.62

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Solution

The fourth proportional to 18,935.90, 28,400.13 and 6,456.62 is: 9,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.90 : 28,400.13 = 6,456.62 : x
  2. Step 2: Convert to fraction form
    18,935.90/28,400.13 = 6,456.62/x
  3. Step 3: Cross multiply
    18,935.90x = 28,400.13 × 6,456.62
  4. Step 4: Simplify right side
    18,935.90x = 183,368,847.36
  5. Step 5: Solve for x
    x = 183,368,847.36/18,935.90
  6. Step 6: Final answer
    x = 9,683.66

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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.