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Finding the Fourth Proportional to 14,040.58, 21,060.81 and 5,718.74

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Solution

The fourth proportional to 14,040.58, 21,060.81 and 5,718.74 is: 8,578.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,040.58 : 21,060.81 = 5,718.74 : x
  2. Step 2: Convert to fraction form
    14,040.58/21,060.81 = 5,718.74/x
  3. Step 3: Cross multiply
    14,040.58x = 21,060.81 × 5,718.74
  4. Step 4: Simplify right side
    14,040.58x = 120,441,296.58
  5. Step 5: Solve for x
    x = 120,441,296.58/14,040.58
  6. Step 6: Final answer
    x = 8,578.09

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1.5x scale

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.