Home / 19,209.16-28,775.40-9,318.43

Finding the Fourth Proportional to 19,209.16, 28,775.40 and 9,318.43

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Solution

The fourth proportional to 19,209.16, 28,775.40 and 9,318.43 is: 13,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.16 : 28,775.40 = 9,318.43 : x
  2. Step 2: Convert to fraction form
    19,209.16/28,775.40 = 9,318.43/x
  3. Step 3: Cross multiply
    19,209.16x = 28,775.40 × 9,318.43
  4. Step 4: Simplify right side
    19,209.16x = 268,141,550.62
  5. Step 5: Solve for x
    x = 268,141,550.62/19,209.16
  6. Step 6: Final answer
    x = 13,959.05

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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.