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Finding the Fourth Proportional to 30,693, 42,358.48 and 17,265.54

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Solution

The fourth proportional to 30,693, 42,358.48 and 17,265.54 is: 23,827.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,693 : 42,358.48 = 17,265.54 : x
  2. Step 2: Convert to fraction form
    30,693/42,358.48 = 17,265.54/x
  3. Step 3: Cross multiply
    30,693x = 42,358.48 × 17,265.54
  4. Step 4: Simplify right side
    30,693x = 731,342,030.78
  5. Step 5: Solve for x
    x = 731,342,030.78/30,693
  6. Step 6: Final answer
    x = 23,827.65

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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.