Home / 20,773.81-28,667.90-11,342.35

Finding the Fourth Proportional to 20,773.81, 28,667.90 and 11,342.35

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Solution

The fourth proportional to 20,773.81, 28,667.90 and 11,342.35 is: 15,652.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.81 : 28,667.90 = 11,342.35 : x
  2. Step 2: Convert to fraction form
    20,773.81/28,667.90 = 11,342.35/x
  3. Step 3: Cross multiply
    20,773.81x = 28,667.90 × 11,342.35
  4. Step 4: Simplify right side
    20,773.81x = 325,161,155.51
  5. Step 5: Solve for x
    x = 325,161,155.51/20,773.81
  6. Step 6: Final answer
    x = 15,652.46

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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.