Home / 30,924.78-42,675.03-18,988.62

Finding the Fourth Proportional to 30,924.78, 42,675.03 and 18,988.62

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Solution

The fourth proportional to 30,924.78, 42,675.03 and 18,988.62 is: 26,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,924.78 : 42,675.03 = 18,988.62 : x
  2. Step 2: Convert to fraction form
    30,924.78/42,675.03 = 18,988.62/x
  3. Step 3: Cross multiply
    30,924.78x = 42,675.03 × 18,988.62
  4. Step 4: Simplify right side
    30,924.78x = 810,339,928.16
  5. Step 5: Solve for x
    x = 810,339,928.16/30,924.78
  6. Step 6: Final answer
    x = 26,203.58

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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.