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Finding the Fourth Proportional to 13,291.81, 18,343.04 and 7,323.48

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Solution

The fourth proportional to 13,291.81, 18,343.04 and 7,323.48 is: 10,106.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.81 : 18,343.04 = 7,323.48 : x
  2. Step 2: Convert to fraction form
    13,291.81/18,343.04 = 7,323.48/x
  3. Step 3: Cross multiply
    13,291.81x = 18,343.04 × 7,323.48
  4. Step 4: Simplify right side
    13,291.81x = 134,334,877.42
  5. Step 5: Solve for x
    x = 134,334,877.42/13,291.81
  6. Step 6: Final answer
    x = 10,106.59

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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.