Home / 19,117.30-28,677.72-7,431.40

Finding the Fourth Proportional to 19,117.30, 28,677.72 and 7,431.40

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Solution

The fourth proportional to 19,117.30, 28,677.72 and 7,431.40 is: 11,147.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.30 : 28,677.72 = 7,431.40 : x
  2. Step 2: Convert to fraction form
    19,117.30/28,677.72 = 7,431.40/x
  3. Step 3: Cross multiply
    19,117.30x = 28,677.72 × 7,431.40
  4. Step 4: Simplify right side
    19,117.30x = 213,115,608.41
  5. Step 5: Solve for x
    x = 213,115,608.41/19,117.30
  6. Step 6: Final answer
    x = 11,147.79

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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.