Home / 21,335.85-31,960.90-10,629.93

Finding the Fourth Proportional to 21,335.85, 31,960.90 and 10,629.93

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Solution

The fourth proportional to 21,335.85, 31,960.90 and 10,629.93 is: 15,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.85 : 31,960.90 = 10,629.93 : x
  2. Step 2: Convert to fraction form
    21,335.85/31,960.90 = 10,629.93/x
  3. Step 3: Cross multiply
    21,335.85x = 31,960.90 × 10,629.93
  4. Step 4: Simplify right side
    21,335.85x = 339,742,129.74
  5. Step 5: Solve for x
    x = 339,742,129.74/21,335.85
  6. Step 6: Final answer
    x = 15,923.53

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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.