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Finding the Fourth Proportional to 14,443.66, 21,662.76 and 7,040.68

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Solution

The fourth proportional to 14,443.66, 21,662.76 and 7,040.68 is: 10,559.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,443.66 : 21,662.76 = 7,040.68 : x
  2. Step 2: Convert to fraction form
    14,443.66/21,662.76 = 7,040.68/x
  3. Step 3: Cross multiply
    14,443.66x = 21,662.76 × 7,040.68
  4. Step 4: Simplify right side
    14,443.66x = 152,520,561.08
  5. Step 5: Solve for x
    x = 152,520,561.08/14,443.66
  6. Step 6: Final answer
    x = 10,559.69

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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.