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Finding the Fourth Proportional to 18,129.19, 27,071.72 and 14,803.94

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Solution

The fourth proportional to 18,129.19, 27,071.72 and 14,803.94 is: 22,106.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.19 : 27,071.72 = 14,803.94 : x
  2. Step 2: Convert to fraction form
    18,129.19/27,071.72 = 14,803.94/x
  3. Step 3: Cross multiply
    18,129.19x = 27,071.72 × 14,803.94
  4. Step 4: Simplify right side
    18,129.19x = 400,768,091.61
  5. Step 5: Solve for x
    x = 400,768,091.61/18,129.19
  6. Step 6: Final answer
    x = 22,106.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.