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Finding the Fourth Proportional to 16,679.40, 25,019.10 and 14,631.40

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Solution

The fourth proportional to 16,679.40, 25,019.10 and 14,631.40 is: 21,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,679.40 : 25,019.10 = 14,631.40 : x
  2. Step 2: Convert to fraction form
    16,679.40/25,019.10 = 14,631.40/x
  3. Step 3: Cross multiply
    16,679.40x = 25,019.10 × 14,631.40
  4. Step 4: Simplify right side
    16,679.40x = 366,064,459.74
  5. Step 5: Solve for x
    x = 366,064,459.74/16,679.40
  6. Step 6: Final answer
    x = 21,947.10

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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.