Home / 19,856.71-29,776.31-9,329.72

Finding the Fourth Proportional to 19,856.71, 29,776.31 and 9,329.72

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Solution

The fourth proportional to 19,856.71, 29,776.31 and 9,329.72 is: 13,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,856.71 : 29,776.31 = 9,329.72 : x
  2. Step 2: Convert to fraction form
    19,856.71/29,776.31 = 9,329.72/x
  3. Step 3: Cross multiply
    19,856.71x = 29,776.31 × 9,329.72
  4. Step 4: Simplify right side
    19,856.71x = 277,804,634.93
  5. Step 5: Solve for x
    x = 277,804,634.93/19,856.71
  6. Step 6: Final answer
    x = 13,990.47

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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.