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Finding the Fourth Proportional to 14,473.40, 21,710.10 and 12,869.60

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Solution

The fourth proportional to 14,473.40, 21,710.10 and 12,869.60 is: 19,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,473.40 : 21,710.10 = 12,869.60 : x
  2. Step 2: Convert to fraction form
    14,473.40/21,710.10 = 12,869.60/x
  3. Step 3: Cross multiply
    14,473.40x = 21,710.10 × 12,869.60
  4. Step 4: Simplify right side
    14,473.40x = 279,400,302.96
  5. Step 5: Solve for x
    x = 279,400,302.96/14,473.40
  6. Step 6: Final answer
    x = 19,304.40

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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.