Home / 20,507.35-28,328.66-19,443.01

Finding the Fourth Proportional to 20,507.35, 28,328.66 and 19,443.01

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Solution

The fourth proportional to 20,507.35, 28,328.66 and 19,443.01 is: 26,858.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.35 : 28,328.66 = 19,443.01 : x
  2. Step 2: Convert to fraction form
    20,507.35/28,328.66 = 19,443.01/x
  3. Step 3: Cross multiply
    20,507.35x = 28,328.66 × 19,443.01
  4. Step 4: Simplify right side
    20,507.35x = 550,794,419.67
  5. Step 5: Solve for x
    x = 550,794,419.67/20,507.35
  6. Step 6: Final answer
    x = 26,858.39

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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.