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Finding the Fourth Proportional to 14,397.81, 19,872.69 and 9,374.58

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Solution

The fourth proportional to 14,397.81, 19,872.69 and 9,374.58 is: 12,939.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,397.81 : 19,872.69 = 9,374.58 : x
  2. Step 2: Convert to fraction form
    14,397.81/19,872.69 = 9,374.58/x
  3. Step 3: Cross multiply
    14,397.81x = 19,872.69 × 9,374.58
  4. Step 4: Simplify right side
    14,397.81x = 186,298,122.22
  5. Step 5: Solve for x
    x = 186,298,122.22/14,397.81
  6. Step 6: Final answer
    x = 12,939.34

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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.