Home / 11,421.10-17,106.84-11,142.31

Finding the Fourth Proportional to 11,421.10, 17,106.84 and 11,142.31

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Solution

The fourth proportional to 11,421.10, 17,106.84 and 11,142.31 is: 16,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.10 : 17,106.84 = 11,142.31 : x
  2. Step 2: Convert to fraction form
    11,421.10/17,106.84 = 11,142.31/x
  3. Step 3: Cross multiply
    11,421.10x = 17,106.84 × 11,142.31
  4. Step 4: Simplify right side
    11,421.10x = 190,609,714.40
  5. Step 5: Solve for x
    x = 190,609,714.40/11,421.10
  6. Step 6: Final answer
    x = 16,689.26

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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.