Home / 15,806.71-21,811.39-9,432.12

Finding the Fourth Proportional to 15,806.71, 21,811.39 and 9,432.12

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Solution

The fourth proportional to 15,806.71, 21,811.39 and 9,432.12 is: 13,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.71 : 21,811.39 = 9,432.12 : x
  2. Step 2: Convert to fraction form
    15,806.71/21,811.39 = 9,432.12/x
  3. Step 3: Cross multiply
    15,806.71x = 21,811.39 × 9,432.12
  4. Step 4: Simplify right side
    15,806.71x = 205,727,522.03
  5. Step 5: Solve for x
    x = 205,727,522.03/15,806.71
  6. Step 6: Final answer
    x = 13,015.21

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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.