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Finding the Fourth Proportional to 13,695.41, 18,901.11 and 8,030.40

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Solution

The fourth proportional to 13,695.41, 18,901.11 and 8,030.40 is: 11,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.41 : 18,901.11 = 8,030.40 : x
  2. Step 2: Convert to fraction form
    13,695.41/18,901.11 = 8,030.40/x
  3. Step 3: Cross multiply
    13,695.41x = 18,901.11 × 8,030.40
  4. Step 4: Simplify right side
    13,695.41x = 151,783,473.74
  5. Step 5: Solve for x
    x = 151,783,473.74/13,695.41
  6. Step 6: Final answer
    x = 11,082.80

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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.