Home / 20,303.60-28,017.81-11,228.42

Finding the Fourth Proportional to 20,303.60, 28,017.81 and 11,228.42

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Solution

The fourth proportional to 20,303.60, 28,017.81 and 11,228.42 is: 15,494.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.60 : 28,017.81 = 11,228.42 : x
  2. Step 2: Convert to fraction form
    20,303.60/28,017.81 = 11,228.42/x
  3. Step 3: Cross multiply
    20,303.60x = 28,017.81 × 11,228.42
  4. Step 4: Simplify right side
    20,303.60x = 314,595,808.20
  5. Step 5: Solve for x
    x = 314,595,808.20/20,303.60
  6. Step 6: Final answer
    x = 15,494.59

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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.