Home / 21,248.27-29,322.48-11,688.75

Finding the Fourth Proportional to 21,248.27, 29,322.48 and 11,688.75

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Solution

The fourth proportional to 21,248.27, 29,322.48 and 11,688.75 is: 16,130.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.27 : 29,322.48 = 11,688.75 : x
  2. Step 2: Convert to fraction form
    21,248.27/29,322.48 = 11,688.75/x
  3. Step 3: Cross multiply
    21,248.27x = 29,322.48 × 11,688.75
  4. Step 4: Simplify right side
    21,248.27x = 342,743,181.93
  5. Step 5: Solve for x
    x = 342,743,181.93/21,248.27
  6. Step 6: Final answer
    x = 16,130.41

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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.