Home / 13,078.40-19,614.65-3,718.21

Finding the Fourth Proportional to 13,078.40, 19,614.65 and 3,718.21

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Solution

The fourth proportional to 13,078.40, 19,614.65 and 3,718.21 is: 5,576.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.40 : 19,614.65 = 3,718.21 : x
  2. Step 2: Convert to fraction form
    13,078.40/19,614.65 = 3,718.21/x
  3. Step 3: Cross multiply
    13,078.40x = 19,614.65 × 3,718.21
  4. Step 4: Simplify right side
    13,078.40x = 72,931,418.22
  5. Step 5: Solve for x
    x = 72,931,418.22/13,078.40
  6. Step 6: Final answer
    x = 5,576.48

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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.