Home / 13,070.18-18,029-12,195.38

Finding the Fourth Proportional to 13,070.18, 18,029 and 12,195.38

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Solution

The fourth proportional to 13,070.18, 18,029 and 12,195.38 is: 16,822.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.18 : 18,029 = 12,195.38 : x
  2. Step 2: Convert to fraction form
    13,070.18/18,029 = 12,195.38/x
  3. Step 3: Cross multiply
    13,070.18x = 18,029 × 12,195.38
  4. Step 4: Simplify right side
    13,070.18x = 219,870,506.02
  5. Step 5: Solve for x
    x = 219,870,506.02/13,070.18
  6. Step 6: Final answer
    x = 16,822.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.