Home / 15,137.48-20,890.20-9,470.42

Finding the Fourth Proportional to 15,137.48, 20,890.20 and 9,470.42

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Solution

The fourth proportional to 15,137.48, 20,890.20 and 9,470.42 is: 13,069.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.48 : 20,890.20 = 9,470.42 : x
  2. Step 2: Convert to fraction form
    15,137.48/20,890.20 = 9,470.42/x
  3. Step 3: Cross multiply
    15,137.48x = 20,890.20 × 9,470.42
  4. Step 4: Simplify right side
    15,137.48x = 197,838,863.43
  5. Step 5: Solve for x
    x = 197,838,863.43/15,137.48
  6. Step 6: Final answer
    x = 13,069.48

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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.