Home / 13,818.30-20,730.63-3,957.66

Finding the Fourth Proportional to 13,818.30, 20,730.63 and 3,957.66

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Solution

The fourth proportional to 13,818.30, 20,730.63 and 3,957.66 is: 5,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.30 : 20,730.63 = 3,957.66 : x
  2. Step 2: Convert to fraction form
    13,818.30/20,730.63 = 3,957.66/x
  3. Step 3: Cross multiply
    13,818.30x = 20,730.63 × 3,957.66
  4. Step 4: Simplify right side
    13,818.30x = 82,044,785.13
  5. Step 5: Solve for x
    x = 82,044,785.13/13,818.30
  6. Step 6: Final answer
    x = 5,937.40

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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.