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Finding the Fourth Proportional to 13,406.84, 18,499.84 and 7,437.05

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Solution

The fourth proportional to 13,406.84, 18,499.84 and 7,437.05 is: 10,262.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.84 : 18,499.84 = 7,437.05 : x
  2. Step 2: Convert to fraction form
    13,406.84/18,499.84 = 7,437.05/x
  3. Step 3: Cross multiply
    13,406.84x = 18,499.84 × 7,437.05
  4. Step 4: Simplify right side
    13,406.84x = 137,584,235.07
  5. Step 5: Solve for x
    x = 137,584,235.07/13,406.84
  6. Step 6: Final answer
    x = 10,262.24

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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.