Home / 21,920.36-30,253.03-12,362.20

Finding the Fourth Proportional to 21,920.36, 30,253.03 and 12,362.20

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Solution

The fourth proportional to 21,920.36, 30,253.03 and 12,362.20 is: 17,061.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.36 : 30,253.03 = 12,362.20 : x
  2. Step 2: Convert to fraction form
    21,920.36/30,253.03 = 12,362.20/x
  3. Step 3: Cross multiply
    21,920.36x = 30,253.03 × 12,362.20
  4. Step 4: Simplify right side
    21,920.36x = 373,993,900.93
  5. Step 5: Solve for x
    x = 373,993,900.93/21,920.36
  6. Step 6: Final answer
    x = 17,061.49

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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.