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Finding the Fourth Proportional to 13,384.60, 18,473.33 and 7,723.01

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Solution

The fourth proportional to 13,384.60, 18,473.33 and 7,723.01 is: 10,659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.60 : 18,473.33 = 7,723.01 : x
  2. Step 2: Convert to fraction form
    13,384.60/18,473.33 = 7,723.01/x
  3. Step 3: Cross multiply
    13,384.60x = 18,473.33 × 7,723.01
  4. Step 4: Simplify right side
    13,384.60x = 142,669,777.81
  5. Step 5: Solve for x
    x = 142,669,777.81/13,384.60
  6. Step 6: Final answer
    x = 10,659.25

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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.