Home / 30,709.76-42,378.82-17,097.62

Finding the Fourth Proportional to 30,709.76, 42,378.82 and 17,097.62

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Solution

The fourth proportional to 30,709.76, 42,378.82 and 17,097.62 is: 23,594.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,709.76 : 42,378.82 = 17,097.62 : x
  2. Step 2: Convert to fraction form
    30,709.76/42,378.82 = 17,097.62/x
  3. Step 3: Cross multiply
    30,709.76x = 42,378.82 × 17,097.62
  4. Step 4: Simplify right side
    30,709.76x = 724,576,960.41
  5. Step 5: Solve for x
    x = 724,576,960.41/30,709.76
  6. Step 6: Final answer
    x = 23,594.35

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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.