Home / 12,420.28-18,630.20-5,024.64

Finding the Fourth Proportional to 12,420.28, 18,630.20 and 5,024.64

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Solution

The fourth proportional to 12,420.28, 18,630.20 and 5,024.64 is: 7,536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.28 : 18,630.20 = 5,024.64 : x
  2. Step 2: Convert to fraction form
    12,420.28/18,630.20 = 5,024.64/x
  3. Step 3: Cross multiply
    12,420.28x = 18,630.20 × 5,024.64
  4. Step 4: Simplify right side
    12,420.28x = 93,610,048.13
  5. Step 5: Solve for x
    x = 93,610,048.13/12,420.28
  6. Step 6: Final answer
    x = 7,536.87

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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.