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Finding the Fourth Proportional to 15,815.40, 23,730.48 and 7,049.40

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Solution

The fourth proportional to 15,815.40, 23,730.48 and 7,049.40 is: 10,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.40 : 23,730.48 = 7,049.40 : x
  2. Step 2: Convert to fraction form
    15,815.40/23,730.48 = 7,049.40/x
  3. Step 3: Cross multiply
    15,815.40x = 23,730.48 × 7,049.40
  4. Step 4: Simplify right side
    15,815.40x = 167,285,645.71
  5. Step 5: Solve for x
    x = 167,285,645.71/15,815.40
  6. Step 6: Final answer
    x = 10,577.39

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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.