Home / 22,378.66-30,865.77-21,386.02

Finding the Fourth Proportional to 22,378.66, 30,865.77 and 21,386.02

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Solution

The fourth proportional to 22,378.66, 30,865.77 and 21,386.02 is: 29,496.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.66 : 30,865.77 = 21,386.02 : x
  2. Step 2: Convert to fraction form
    22,378.66/30,865.77 = 21,386.02/x
  3. Step 3: Cross multiply
    22,378.66x = 30,865.77 × 21,386.02
  4. Step 4: Simplify right side
    22,378.66x = 660,095,974.54
  5. Step 5: Solve for x
    x = 660,095,974.54/22,378.66
  6. Step 6: Final answer
    x = 29,496.67

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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.