Home / 30,678.96-42,336.80-17,250.24

Finding the Fourth Proportional to 30,678.96, 42,336.80 and 17,250.24

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Solution

The fourth proportional to 30,678.96, 42,336.80 and 17,250.24 is: 23,805.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,678.96 : 42,336.80 = 17,250.24 : x
  2. Step 2: Convert to fraction form
    30,678.96/42,336.80 = 17,250.24/x
  3. Step 3: Cross multiply
    30,678.96x = 42,336.80 × 17,250.24
  4. Step 4: Simplify right side
    30,678.96x = 730,319,960.83
  5. Step 5: Solve for x
    x = 730,319,960.83/30,678.96
  6. Step 6: Final answer
    x = 23,805.24

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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.