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Finding the Fourth Proportional to 18,492.51, 27,738.69 and 4,641.51

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Solution

The fourth proportional to 18,492.51, 27,738.69 and 4,641.51 is: 6,962.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.51 : 27,738.69 = 4,641.51 : x
  2. Step 2: Convert to fraction form
    18,492.51/27,738.69 = 4,641.51/x
  3. Step 3: Cross multiply
    18,492.51x = 27,738.69 × 4,641.51
  4. Step 4: Simplify right side
    18,492.51x = 128,749,407.02
  5. Step 5: Solve for x
    x = 128,749,407.02/18,492.51
  6. Step 6: Final answer
    x = 6,962.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.