Home / 30,767.28-42,458.87-16,620.13

Finding the Fourth Proportional to 30,767.28, 42,458.87 and 16,620.13

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Solution

The fourth proportional to 30,767.28, 42,458.87 and 16,620.13 is: 22,935.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,767.28 : 42,458.87 = 16,620.13 : x
  2. Step 2: Convert to fraction form
    30,767.28/42,458.87 = 16,620.13/x
  3. Step 3: Cross multiply
    30,767.28x = 42,458.87 × 16,620.13
  4. Step 4: Simplify right side
    30,767.28x = 705,671,939.05
  5. Step 5: Solve for x
    x = 705,671,939.05/30,767.28
  6. Step 6: Final answer
    x = 22,935.79

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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.