Home / 18,936.30-28,404.45-13,298.70

Finding the Fourth Proportional to 18,936.30, 28,404.45 and 13,298.70

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Solution

The fourth proportional to 18,936.30, 28,404.45 and 13,298.70 is: 19,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.30 : 28,404.45 = 13,298.70 : x
  2. Step 2: Convert to fraction form
    18,936.30/28,404.45 = 13,298.70/x
  3. Step 3: Cross multiply
    18,936.30x = 28,404.45 × 13,298.70
  4. Step 4: Simplify right side
    18,936.30x = 377,742,259.22
  5. Step 5: Solve for x
    x = 377,742,259.22/18,936.30
  6. Step 6: Final answer
    x = 19,948.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.