Home / 20,224.52-30,312.96-9,118.21

Finding the Fourth Proportional to 20,224.52, 30,312.96 and 9,118.21

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Solution

The fourth proportional to 20,224.52, 30,312.96 and 9,118.21 is: 13,666.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.52 : 30,312.96 = 9,118.21 : x
  2. Step 2: Convert to fraction form
    20,224.52/30,312.96 = 9,118.21/x
  3. Step 3: Cross multiply
    20,224.52x = 30,312.96 × 9,118.21
  4. Step 4: Simplify right side
    20,224.52x = 276,399,907.51
  5. Step 5: Solve for x
    x = 276,399,907.51/20,224.52
  6. Step 6: Final answer
    x = 13,666.57

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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.