Home / 20,402.29-30,603.57-5,612.77

Finding the Fourth Proportional to 20,402.29, 30,603.57 and 5,612.77

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Solution

The fourth proportional to 20,402.29, 30,603.57 and 5,612.77 is: 8,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.29 : 30,603.57 = 5,612.77 : x
  2. Step 2: Convert to fraction form
    20,402.29/30,603.57 = 5,612.77/x
  3. Step 3: Cross multiply
    20,402.29x = 30,603.57 × 5,612.77
  4. Step 4: Simplify right side
    20,402.29x = 171,770,799.59
  5. Step 5: Solve for x
    x = 171,770,799.59/20,402.29
  6. Step 6: Final answer
    x = 8,419.19

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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.