Home / 21,765.76-30,036.36-12,334.12

Finding the Fourth Proportional to 21,765.76, 30,036.36 and 12,334.12

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Solution

The fourth proportional to 21,765.76, 30,036.36 and 12,334.12 is: 17,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.76 : 30,036.36 = 12,334.12 : x
  2. Step 2: Convert to fraction form
    21,765.76/30,036.36 = 12,334.12/x
  3. Step 3: Cross multiply
    21,765.76x = 30,036.36 × 12,334.12
  4. Step 4: Simplify right side
    21,765.76x = 370,472,068.60
  5. Step 5: Solve for x
    x = 370,472,068.60/21,765.76
  6. Step 6: Final answer
    x = 17,020.87

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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.