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Finding the Fourth Proportional to 14,804.16, 20,428.50 and 8,429.04

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Solution

The fourth proportional to 14,804.16, 20,428.50 and 8,429.04 is: 11,631.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,804.16 : 20,428.50 = 8,429.04 : x
  2. Step 2: Convert to fraction form
    14,804.16/20,428.50 = 8,429.04/x
  3. Step 3: Cross multiply
    14,804.16x = 20,428.50 × 8,429.04
  4. Step 4: Simplify right side
    14,804.16x = 172,192,643.64
  5. Step 5: Solve for x
    x = 172,192,643.64/14,804.16
  6. Step 6: Final answer
    x = 11,631.37

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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.