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Finding the Fourth Proportional to 14,009.43, 19,333.11 and 7,721.81

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Solution

The fourth proportional to 14,009.43, 19,333.11 and 7,721.81 is: 10,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.43 : 19,333.11 = 7,721.81 : x
  2. Step 2: Convert to fraction form
    14,009.43/19,333.11 = 7,721.81/x
  3. Step 3: Cross multiply
    14,009.43x = 19,333.11 × 7,721.81
  4. Step 4: Simplify right side
    14,009.43x = 149,286,602.13
  5. Step 5: Solve for x
    x = 149,286,602.13/14,009.43
  6. Step 6: Final answer
    x = 10,656.15

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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.