Home / 16,731.90-23,090.88-9,178.56

Finding the Fourth Proportional to 16,731.90, 23,090.88 and 9,178.56

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Solution

The fourth proportional to 16,731.90, 23,090.88 and 9,178.56 is: 12,666.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,731.90 : 23,090.88 = 9,178.56 : x
  2. Step 2: Convert to fraction form
    16,731.90/23,090.88 = 9,178.56/x
  3. Step 3: Cross multiply
    16,731.90x = 23,090.88 × 9,178.56
  4. Step 4: Simplify right side
    16,731.90x = 211,941,027.53
  5. Step 5: Solve for x
    x = 211,941,027.53/16,731.90
  6. Step 6: Final answer
    x = 12,666.88

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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.