Home / 42,775.16-64,169.66-13,186.07

Finding the Fourth Proportional to 42,775.16, 64,169.66 and 13,186.07

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Solution

The fourth proportional to 42,775.16, 64,169.66 and 13,186.07 is: 19,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,775.16 : 64,169.66 = 13,186.07 : x
  2. Step 2: Convert to fraction form
    42,775.16/64,169.66 = 13,186.07/x
  3. Step 3: Cross multiply
    42,775.16x = 64,169.66 × 13,186.07
  4. Step 4: Simplify right side
    42,775.16x = 846,145,714.27
  5. Step 5: Solve for x
    x = 846,145,714.27/42,775.16
  6. Step 6: Final answer
    x = 19,781.24

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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.