Home / 13,971.31-20,966.38-5,206.23

Finding the Fourth Proportional to 13,971.31, 20,966.38 and 5,206.23

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Solution

The fourth proportional to 13,971.31, 20,966.38 and 5,206.23 is: 7,812.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.31 : 20,966.38 = 5,206.23 : x
  2. Step 2: Convert to fraction form
    13,971.31/20,966.38 = 5,206.23/x
  3. Step 3: Cross multiply
    13,971.31x = 20,966.38 × 5,206.23
  4. Step 4: Simplify right side
    13,971.31x = 109,155,783.53
  5. Step 5: Solve for x
    x = 109,155,783.53/13,971.31
  6. Step 6: Final answer
    x = 7,812.85

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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.