Home / 11,688.72-16,125.48-6,972.08

Finding the Fourth Proportional to 11,688.72, 16,125.48 and 6,972.08

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Solution

The fourth proportional to 11,688.72, 16,125.48 and 6,972.08 is: 9,618.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.72 : 16,125.48 = 6,972.08 : x
  2. Step 2: Convert to fraction form
    11,688.72/16,125.48 = 6,972.08/x
  3. Step 3: Cross multiply
    11,688.72x = 16,125.48 × 6,972.08
  4. Step 4: Simplify right side
    11,688.72x = 112,428,136.60
  5. Step 5: Solve for x
    x = 112,428,136.60/11,688.72
  6. Step 6: Final answer
    x = 9,618.52

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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.