Home / 12,148.88-18,213.51-5,124.36

Finding the Fourth Proportional to 12,148.88, 18,213.51 and 5,124.36

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Solution

The fourth proportional to 12,148.88, 18,213.51 and 5,124.36 is: 7,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.88 : 18,213.51 = 5,124.36 : x
  2. Step 2: Convert to fraction form
    12,148.88/18,213.51 = 5,124.36/x
  3. Step 3: Cross multiply
    12,148.88x = 18,213.51 × 5,124.36
  4. Step 4: Simplify right side
    12,148.88x = 93,332,582.10
  5. Step 5: Solve for x
    x = 93,332,582.10/12,148.88
  6. Step 6: Final answer
    x = 7,682.40

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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.