Home / 20,690.96-31,017.24-9,437.84

Finding the Fourth Proportional to 20,690.96, 31,017.24 and 9,437.84

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Solution

The fourth proportional to 20,690.96, 31,017.24 and 9,437.84 is: 14,148.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.96 : 31,017.24 = 9,437.84 : x
  2. Step 2: Convert to fraction form
    20,690.96/31,017.24 = 9,437.84/x
  3. Step 3: Cross multiply
    20,690.96x = 31,017.24 × 9,437.84
  4. Step 4: Simplify right side
    20,690.96x = 292,735,748.36
  5. Step 5: Solve for x
    x = 292,735,748.36/20,690.96
  6. Step 6: Final answer
    x = 14,148.00

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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.