Home / 30,753.48-42,441.38-18,813.08

Finding the Fourth Proportional to 30,753.48, 42,441.38 and 18,813.08

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Solution

The fourth proportional to 30,753.48, 42,441.38 and 18,813.08 is: 25,963.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.48 : 42,441.38 = 18,813.08 : x
  2. Step 2: Convert to fraction form
    30,753.48/42,441.38 = 18,813.08/x
  3. Step 3: Cross multiply
    30,753.48x = 42,441.38 × 18,813.08
  4. Step 4: Simplify right side
    30,753.48x = 798,453,077.25
  5. Step 5: Solve for x
    x = 798,453,077.25/30,753.48
  6. Step 6: Final answer
    x = 25,963.02

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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.