Home / 20,133.64-30,178.70-9,731.08

Finding the Fourth Proportional to 20,133.64, 30,178.70 and 9,731.08

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Solution

The fourth proportional to 20,133.64, 30,178.70 and 9,731.08 is: 14,586.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.64 : 30,178.70 = 9,731.08 : x
  2. Step 2: Convert to fraction form
    20,133.64/30,178.70 = 9,731.08/x
  3. Step 3: Cross multiply
    20,133.64x = 30,178.70 × 9,731.08
  4. Step 4: Simplify right side
    20,133.64x = 293,671,344.00
  5. Step 5: Solve for x
    x = 293,671,344.00/20,133.64
  6. Step 6: Final answer
    x = 14,586.10

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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.