Home / 20,844.81-31,277.75-10,455.75

Finding the Fourth Proportional to 20,844.81, 31,277.75 and 10,455.75

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Solution

The fourth proportional to 20,844.81, 31,277.75 and 10,455.75 is: 15,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.81 : 31,277.75 = 10,455.75 : x
  2. Step 2: Convert to fraction form
    20,844.81/31,277.75 = 10,455.75/x
  3. Step 3: Cross multiply
    20,844.81x = 31,277.75 × 10,455.75
  4. Step 4: Simplify right side
    20,844.81x = 327,032,282.28
  5. Step 5: Solve for x
    x = 327,032,282.28/20,844.81
  6. Step 6: Final answer
    x = 15,688.91

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1.5x scale

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.