Home / 12,869.10-19,315.80-11,022.30

Finding the Fourth Proportional to 12,869.10, 19,315.80 and 11,022.30

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Solution

The fourth proportional to 12,869.10, 19,315.80 and 11,022.30 is: 16,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.10 : 19,315.80 = 11,022.30 : x
  2. Step 2: Convert to fraction form
    12,869.10/19,315.80 = 11,022.30/x
  3. Step 3: Cross multiply
    12,869.10x = 19,315.80 × 11,022.30
  4. Step 4: Simplify right side
    12,869.10x = 212,904,542.34
  5. Step 5: Solve for x
    x = 212,904,542.34/12,869.10
  6. Step 6: Final answer
    x = 16,543.86

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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.