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Finding the Fourth Proportional to 21,759.68, 30,014.06 and 17,035.76

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Solution

The fourth proportional to 21,759.68, 30,014.06 and 17,035.76 is: 23,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.68 : 30,014.06 = 17,035.76 : x
  2. Step 2: Convert to fraction form
    21,759.68/30,014.06 = 17,035.76/x
  3. Step 3: Cross multiply
    21,759.68x = 30,014.06 × 17,035.76
  4. Step 4: Simplify right side
    21,759.68x = 511,312,322.79
  5. Step 5: Solve for x
    x = 511,312,322.79/21,759.68
  6. Step 6: Final answer
    x = 23,498.15

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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.