Home / 30,491.14-42,072.70-17,918.32

Finding the Fourth Proportional to 30,491.14, 42,072.70 and 17,918.32

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Solution

The fourth proportional to 30,491.14, 42,072.70 and 17,918.32 is: 24,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,491.14 : 42,072.70 = 17,918.32 : x
  2. Step 2: Convert to fraction form
    30,491.14/42,072.70 = 17,918.32/x
  3. Step 3: Cross multiply
    30,491.14x = 42,072.70 × 17,918.32
  4. Step 4: Simplify right side
    30,491.14x = 753,872,101.86
  5. Step 5: Solve for x
    x = 753,872,101.86/30,491.14
  6. Step 6: Final answer
    x = 24,724.30

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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.