Home / 11,421.08-17,106.86-11,142.32

Finding the Fourth Proportional to 11,421.08, 17,106.86 and 11,142.32

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Solution

The fourth proportional to 11,421.08, 17,106.86 and 11,142.32 is: 16,689.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.08 : 17,106.86 = 11,142.32 : x
  2. Step 2: Convert to fraction form
    11,421.08/17,106.86 = 11,142.32/x
  3. Step 3: Cross multiply
    11,421.08x = 17,106.86 × 11,142.32
  4. Step 4: Simplify right side
    11,421.08x = 190,610,108.32
  5. Step 5: Solve for x
    x = 190,610,108.32/11,421.08
  6. Step 6: Final answer
    x = 16,689.32

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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.