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Finding the Fourth Proportional to 14,429.64, 19,910.70 and 9,131.70

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Solution

The fourth proportional to 14,429.64, 19,910.70 and 9,131.70 is: 12,600.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,429.64 : 19,910.70 = 9,131.70 : x
  2. Step 2: Convert to fraction form
    14,429.64/19,910.70 = 9,131.70/x
  3. Step 3: Cross multiply
    14,429.64x = 19,910.70 × 9,131.70
  4. Step 4: Simplify right side
    14,429.64x = 181,818,539.19
  5. Step 5: Solve for x
    x = 181,818,539.19/14,429.64
  6. Step 6: Final answer
    x = 12,600.35

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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.