Home / 30,624.84-42,261.21-18,708.12

Finding the Fourth Proportional to 30,624.84, 42,261.21 and 18,708.12

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Solution

The fourth proportional to 30,624.84, 42,261.21 and 18,708.12 is: 25,816.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,624.84 : 42,261.21 = 18,708.12 : x
  2. Step 2: Convert to fraction form
    30,624.84/42,261.21 = 18,708.12/x
  3. Step 3: Cross multiply
    30,624.84x = 42,261.21 × 18,708.12
  4. Step 4: Simplify right side
    30,624.84x = 790,627,788.03
  5. Step 5: Solve for x
    x = 790,627,788.03/30,624.84
  6. Step 6: Final answer
    x = 25,816.55

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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.