Home / 23,178.63-31,987.14-13,108.57

Finding the Fourth Proportional to 23,178.63, 31,987.14 and 13,108.57

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Solution

The fourth proportional to 23,178.63, 31,987.14 and 13,108.57 is: 18,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,178.63 : 31,987.14 = 13,108.57 : x
  2. Step 2: Convert to fraction form
    23,178.63/31,987.14 = 13,108.57/x
  3. Step 3: Cross multiply
    23,178.63x = 31,987.14 × 13,108.57
  4. Step 4: Simplify right side
    23,178.63x = 419,305,714.59
  5. Step 5: Solve for x
    x = 419,305,714.59/23,178.63
  6. Step 6: Final answer
    x = 18,090.19

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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.