Home / 21,316.37-31,947.19-10,206.41

Finding the Fourth Proportional to 21,316.37, 31,947.19 and 10,206.41

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Solution

The fourth proportional to 21,316.37, 31,947.19 and 10,206.41 is: 15,296.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.37 : 31,947.19 = 10,206.41 : x
  2. Step 2: Convert to fraction form
    21,316.37/31,947.19 = 10,206.41/x
  3. Step 3: Cross multiply
    21,316.37x = 31,947.19 × 10,206.41
  4. Step 4: Simplify right side
    21,316.37x = 326,066,014.10
  5. Step 5: Solve for x
    x = 326,066,014.10/21,316.37
  6. Step 6: Final answer
    x = 15,296.51

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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.