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Finding the Fourth Proportional to 14,790.40, 22,142.40 and 13,235.20

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Solution

The fourth proportional to 14,790.40, 22,142.40 and 13,235.20 is: 19,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,790.40 : 22,142.40 = 13,235.20 : x
  2. Step 2: Convert to fraction form
    14,790.40/22,142.40 = 13,235.20/x
  3. Step 3: Cross multiply
    14,790.40x = 22,142.40 × 13,235.20
  4. Step 4: Simplify right side
    14,790.40x = 293,059,092.48
  5. Step 5: Solve for x
    x = 293,059,092.48/14,790.40
  6. Step 6: Final answer
    x = 19,814.14

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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.