Home / 30,995.46-42,774.03-18,417.78

Finding the Fourth Proportional to 30,995.46, 42,774.03 and 18,417.78

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Solution

The fourth proportional to 30,995.46, 42,774.03 and 18,417.78 is: 25,416.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,995.46 : 42,774.03 = 18,417.78 : x
  2. Step 2: Convert to fraction form
    30,995.46/42,774.03 = 18,417.78/x
  3. Step 3: Cross multiply
    30,995.46x = 42,774.03 × 18,417.78
  4. Step 4: Simplify right side
    30,995.46x = 787,802,674.25
  5. Step 5: Solve for x
    x = 787,802,674.25/30,995.46
  6. Step 6: Final answer
    x = 25,416.71

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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.