Home / 30,746.48-42,436.32-20,132.24

Finding the Fourth Proportional to 30,746.48, 42,436.32 and 20,132.24

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Solution

The fourth proportional to 30,746.48, 42,436.32 and 20,132.24 is: 27,786.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,746.48 : 42,436.32 = 20,132.24 : x
  2. Step 2: Convert to fraction form
    30,746.48/42,436.32 = 20,132.24/x
  3. Step 3: Cross multiply
    30,746.48x = 42,436.32 × 20,132.24
  4. Step 4: Simplify right side
    30,746.48x = 854,338,178.96
  5. Step 5: Solve for x
    x = 854,338,178.96/30,746.48
  6. Step 6: Final answer
    x = 27,786.54

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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.