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Finding the Fourth Proportional to 9,927.80, 13,699.51 and 5,451.50

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Solution

The fourth proportional to 9,927.80, 13,699.51 and 5,451.50 is: 7,522.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,927.80 : 13,699.51 = 5,451.50 : x
  2. Step 2: Convert to fraction form
    9,927.80/13,699.51 = 5,451.50/x
  3. Step 3: Cross multiply
    9,927.80x = 13,699.51 × 5,451.50
  4. Step 4: Simplify right side
    9,927.80x = 74,682,878.77
  5. Step 5: Solve for x
    x = 74,682,878.77/9,927.80
  6. Step 6: Final answer
    x = 7,522.60

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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.