Home / 12,478.08-18,717.36-3,713.64

Finding the Fourth Proportional to 12,478.08, 18,717.36 and 3,713.64

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Solution

The fourth proportional to 12,478.08, 18,717.36 and 3,713.64 is: 5,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.08 : 18,717.36 = 3,713.64 : x
  2. Step 2: Convert to fraction form
    12,478.08/18,717.36 = 3,713.64/x
  3. Step 3: Cross multiply
    12,478.08x = 18,717.36 × 3,713.64
  4. Step 4: Simplify right side
    12,478.08x = 69,509,536.79
  5. Step 5: Solve for x
    x = 69,509,536.79/12,478.08
  6. Step 6: Final answer
    x = 5,570.53

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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.