Home / 14,574.70-20,109.63-8,290.54

Finding the Fourth Proportional to 14,574.70, 20,109.63 and 8,290.54

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Solution

The fourth proportional to 14,574.70, 20,109.63 and 8,290.54 is: 11,438.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,574.70 : 20,109.63 = 8,290.54 : x
  2. Step 2: Convert to fraction form
    14,574.70/20,109.63 = 8,290.54/x
  3. Step 3: Cross multiply
    14,574.70x = 20,109.63 × 8,290.54
  4. Step 4: Simplify right side
    14,574.70x = 166,719,691.90
  5. Step 5: Solve for x
    x = 166,719,691.90/14,574.70
  6. Step 6: Final answer
    x = 11,438.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.