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Finding the Fourth Proportional to 14,506.40, 21,745.02 and 7,918.94

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Solution

The fourth proportional to 14,506.40, 21,745.02 and 7,918.94 is: 11,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,506.40 : 21,745.02 = 7,918.94 : x
  2. Step 2: Convert to fraction form
    14,506.40/21,745.02 = 7,918.94/x
  3. Step 3: Cross multiply
    14,506.40x = 21,745.02 × 7,918.94
  4. Step 4: Simplify right side
    14,506.40x = 172,197,508.68
  5. Step 5: Solve for x
    x = 172,197,508.68/14,506.40
  6. Step 6: Final answer
    x = 11,870.45

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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.