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Finding the Fourth Proportional to 13,888.66, 20,828.67 and 4,652.50

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Solution

The fourth proportional to 13,888.66, 20,828.67 and 4,652.50 is: 6,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.66 : 20,828.67 = 4,652.50 : x
  2. Step 2: Convert to fraction form
    13,888.66/20,828.67 = 4,652.50/x
  3. Step 3: Cross multiply
    13,888.66x = 20,828.67 × 4,652.50
  4. Step 4: Simplify right side
    13,888.66x = 96,905,387.18
  5. Step 5: Solve for x
    x = 96,905,387.18/13,888.66
  6. Step 6: Final answer
    x = 6,977.30

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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.