Home / 12,501.20-18,730.20-10,557.20

Finding the Fourth Proportional to 12,501.20, 18,730.20 and 10,557.20

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Solution

The fourth proportional to 12,501.20, 18,730.20 and 10,557.20 is: 15,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,501.20 : 18,730.20 = 10,557.20 : x
  2. Step 2: Convert to fraction form
    12,501.20/18,730.20 = 10,557.20/x
  3. Step 3: Cross multiply
    12,501.20x = 18,730.20 × 10,557.20
  4. Step 4: Simplify right side
    12,501.20x = 197,738,467.44
  5. Step 5: Solve for x
    x = 197,738,467.44/12,501.20
  6. Step 6: Final answer
    x = 15,817.56

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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.