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Finding the Fourth Proportional to 18,984.40, 26,174.01 and 12,258.16

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Solution

The fourth proportional to 18,984.40, 26,174.01 and 12,258.16 is: 16,900.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.40 : 26,174.01 = 12,258.16 : x
  2. Step 2: Convert to fraction form
    18,984.40/26,174.01 = 12,258.16/x
  3. Step 3: Cross multiply
    18,984.40x = 26,174.01 × 12,258.16
  4. Step 4: Simplify right side
    18,984.40x = 320,845,202.42
  5. Step 5: Solve for x
    x = 320,845,202.42/18,984.40
  6. Step 6: Final answer
    x = 16,900.47

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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.