Home / 20,784.63-28,682.93-11,353.19

Finding the Fourth Proportional to 20,784.63, 28,682.93 and 11,353.19

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Solution

The fourth proportional to 20,784.63, 28,682.93 and 11,353.19 is: 15,667.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.63 : 28,682.93 = 11,353.19 : x
  2. Step 2: Convert to fraction form
    20,784.63/28,682.93 = 11,353.19/x
  3. Step 3: Cross multiply
    20,784.63x = 28,682.93 × 11,353.19
  4. Step 4: Simplify right side
    20,784.63x = 325,642,754.05
  5. Step 5: Solve for x
    x = 325,642,754.05/20,784.63
  6. Step 6: Final answer
    x = 15,667.48

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Double scale
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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.