Home / 20,595.78-28,421.42-11,164.14

Finding the Fourth Proportional to 20,595.78, 28,421.42 and 11,164.14

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Solution

The fourth proportional to 20,595.78, 28,421.42 and 11,164.14 is: 15,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.78 : 28,421.42 = 11,164.14 : x
  2. Step 2: Convert to fraction form
    20,595.78/28,421.42 = 11,164.14/x
  3. Step 3: Cross multiply
    20,595.78x = 28,421.42 × 11,164.14
  4. Step 4: Simplify right side
    20,595.78x = 317,300,656.06
  5. Step 5: Solve for x
    x = 317,300,656.06/20,595.78
  6. Step 6: Final answer
    x = 15,406.10

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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.