Home / 18,934.90-28,398.63-6,455.62

Finding the Fourth Proportional to 18,934.90, 28,398.63 and 6,455.62

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Solution

The fourth proportional to 18,934.90, 28,398.63 and 6,455.62 is: 9,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.90 : 28,398.63 = 6,455.62 : x
  2. Step 2: Convert to fraction form
    18,934.90/28,398.63 = 6,455.62/x
  3. Step 3: Cross multiply
    18,934.90x = 28,398.63 × 6,455.62
  4. Step 4: Simplify right side
    18,934.90x = 183,330,763.80
  5. Step 5: Solve for x
    x = 183,330,763.80/18,934.90
  6. Step 6: Final answer
    x = 9,682.16

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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.