Home / 30,821.28-42,533.72-17,392.70

Finding the Fourth Proportional to 30,821.28, 42,533.72 and 17,392.70

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Solution

The fourth proportional to 30,821.28, 42,533.72 and 17,392.70 is: 24,002.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,821.28 : 42,533.72 = 17,392.70 : x
  2. Step 2: Convert to fraction form
    30,821.28/42,533.72 = 17,392.70/x
  3. Step 3: Cross multiply
    30,821.28x = 42,533.72 × 17,392.70
  4. Step 4: Simplify right side
    30,821.28x = 739,775,932.21
  5. Step 5: Solve for x
    x = 739,775,932.21/30,821.28
  6. Step 6: Final answer
    x = 24,002.12

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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.