Home / 30,699.09-42,364.13-17,270.20

Finding the Fourth Proportional to 30,699.09, 42,364.13 and 17,270.20

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Solution

The fourth proportional to 30,699.09, 42,364.13 and 17,270.20 is: 23,832.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699.09 : 42,364.13 = 17,270.20 : x
  2. Step 2: Convert to fraction form
    30,699.09/42,364.13 = 17,270.20/x
  3. Step 3: Cross multiply
    30,699.09x = 42,364.13 × 17,270.20
  4. Step 4: Simplify right side
    30,699.09x = 731,636,997.93
  5. Step 5: Solve for x
    x = 731,636,997.93/30,699.09
  6. Step 6: Final answer
    x = 23,832.53

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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.