Home / 15,807.31-21,813.37-9,760.25

Finding the Fourth Proportional to 15,807.31, 21,813.37 and 9,760.25

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Solution

The fourth proportional to 15,807.31, 21,813.37 and 9,760.25 is: 13,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.31 : 21,813.37 = 9,760.25 : x
  2. Step 2: Convert to fraction form
    15,807.31/21,813.37 = 9,760.25/x
  3. Step 3: Cross multiply
    15,807.31x = 21,813.37 × 9,760.25
  4. Step 4: Simplify right side
    15,807.31x = 212,903,974.68
  5. Step 5: Solve for x
    x = 212,903,974.68/15,807.31
  6. Step 6: Final answer
    x = 13,468.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.