Home / 20,690.74-31,011.81-9,573.96

Finding the Fourth Proportional to 20,690.74, 31,011.81 and 9,573.96

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Solution

The fourth proportional to 20,690.74, 31,011.81 and 9,573.96 is: 14,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.74 : 31,011.81 = 9,573.96 : x
  2. Step 2: Convert to fraction form
    20,690.74/31,011.81 = 9,573.96/x
  3. Step 3: Cross multiply
    20,690.74x = 31,011.81 × 9,573.96
  4. Step 4: Simplify right side
    20,690.74x = 296,905,828.47
  5. Step 5: Solve for x
    x = 296,905,828.47/20,690.74
  6. Step 6: Final answer
    x = 14,349.70

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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.