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Finding the Fourth Proportional to 30,756, 42,443.28 and 17,510.56

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Solution

The fourth proportional to 30,756, 42,443.28 and 17,510.56 is: 24,164.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,756 : 42,443.28 = 17,510.56 : x
  2. Step 2: Convert to fraction form
    30,756/42,443.28 = 17,510.56/x
  3. Step 3: Cross multiply
    30,756x = 42,443.28 × 17,510.56
  4. Step 4: Simplify right side
    30,756x = 743,205,601.04
  5. Step 5: Solve for x
    x = 743,205,601.04/30,756
  6. Step 6: Final answer
    x = 24,164.57

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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.