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Finding the Fourth Proportional to 19,888.86, 27,448.80 and 11,933.04

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Solution

The fourth proportional to 19,888.86, 27,448.80 and 11,933.04 is: 16,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.86 : 27,448.80 = 11,933.04 : x
  2. Step 2: Convert to fraction form
    19,888.86/27,448.80 = 11,933.04/x
  3. Step 3: Cross multiply
    19,888.86x = 27,448.80 × 11,933.04
  4. Step 4: Simplify right side
    19,888.86x = 327,547,628.35
  5. Step 5: Solve for x
    x = 327,547,628.35/19,888.86
  6. Step 6: Final answer
    x = 16,468.90

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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.