Home / 19,116.56-28,678.20-8,729.36

Finding the Fourth Proportional to 19,116.56, 28,678.20 and 8,729.36

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Solution

The fourth proportional to 19,116.56, 28,678.20 and 8,729.36 is: 13,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116.56 : 28,678.20 = 8,729.36 : x
  2. Step 2: Convert to fraction form
    19,116.56/28,678.20 = 8,729.36/x
  3. Step 3: Cross multiply
    19,116.56x = 28,678.20 × 8,729.36
  4. Step 4: Simplify right side
    19,116.56x = 250,342,331.95
  5. Step 5: Solve for x
    x = 250,342,331.95/19,116.56
  6. Step 6: Final answer
    x = 13,095.57

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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.