Home / 21,009.48-28,992.03-12,056.75

Finding the Fourth Proportional to 21,009.48, 28,992.03 and 12,056.75

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Solution

The fourth proportional to 21,009.48, 28,992.03 and 12,056.75 is: 16,637.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.48 : 28,992.03 = 12,056.75 : x
  2. Step 2: Convert to fraction form
    21,009.48/28,992.03 = 12,056.75/x
  3. Step 3: Cross multiply
    21,009.48x = 28,992.03 × 12,056.75
  4. Step 4: Simplify right side
    21,009.48x = 349,549,576.25
  5. Step 5: Solve for x
    x = 349,549,576.25/21,009.48
  6. Step 6: Final answer
    x = 16,637.71

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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.