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Finding the Fourth Proportional to 10,530.96, 14,535 and 7,181.77

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Solution

The fourth proportional to 10,530.96, 14,535 and 7,181.77 is: 9,912.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,530.96 : 14,535 = 7,181.77 : x
  2. Step 2: Convert to fraction form
    10,530.96/14,535 = 7,181.77/x
  3. Step 3: Cross multiply
    10,530.96x = 14,535 × 7,181.77
  4. Step 4: Simplify right side
    10,530.96x = 104,386,990.61
  5. Step 5: Solve for x
    x = 104,386,990.61/10,530.96
  6. Step 6: Final answer
    x = 9,912.39

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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.