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Finding the Fourth Proportional to 30,698.51, 42,360.51 and 17,269.48

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Solution

The fourth proportional to 30,698.51, 42,360.51 and 17,269.48 is: 23,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,698.51 : 42,360.51 = 17,269.48 : x
  2. Step 2: Convert to fraction form
    30,698.51/42,360.51 = 17,269.48/x
  3. Step 3: Cross multiply
    30,698.51x = 42,360.51 × 17,269.48
  4. Step 4: Simplify right side
    30,698.51x = 731,543,999.79
  5. Step 5: Solve for x
    x = 731,543,999.79/30,698.51
  6. Step 6: Final answer
    x = 23,829.95

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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.