Home / 20,983.14-31,478.59-6,943.29

Finding the Fourth Proportional to 20,983.14, 31,478.59 and 6,943.29

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Solution

The fourth proportional to 20,983.14, 31,478.59 and 6,943.29 is: 10,416.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.14 : 31,478.59 = 6,943.29 : x
  2. Step 2: Convert to fraction form
    20,983.14/31,478.59 = 6,943.29/x
  3. Step 3: Cross multiply
    20,983.14x = 31,478.59 × 6,943.29
  4. Step 4: Simplify right side
    20,983.14x = 218,564,854.75
  5. Step 5: Solve for x
    x = 218,564,854.75/20,983.14
  6. Step 6: Final answer
    x = 10,416.21

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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.