Home / 15,729.81-21,706.76-9,019.37

Finding the Fourth Proportional to 15,729.81, 21,706.76 and 9,019.37

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Solution

The fourth proportional to 15,729.81, 21,706.76 and 9,019.37 is: 12,446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.81 : 21,706.76 = 9,019.37 : x
  2. Step 2: Convert to fraction form
    15,729.81/21,706.76 = 9,019.37/x
  3. Step 3: Cross multiply
    15,729.81x = 21,706.76 × 9,019.37
  4. Step 4: Simplify right side
    15,729.81x = 195,781,299.94
  5. Step 5: Solve for x
    x = 195,781,299.94/15,729.81
  6. Step 6: Final answer
    x = 12,446.51

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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.