Home / 18,302.49-27,432.54-8,421.03

Finding the Fourth Proportional to 18,302.49, 27,432.54 and 8,421.03

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Solution

The fourth proportional to 18,302.49, 27,432.54 and 8,421.03 is: 12,621.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.49 : 27,432.54 = 8,421.03 : x
  2. Step 2: Convert to fraction form
    18,302.49/27,432.54 = 8,421.03/x
  3. Step 3: Cross multiply
    18,302.49x = 27,432.54 × 8,421.03
  4. Step 4: Simplify right side
    18,302.49x = 231,010,242.32
  5. Step 5: Solve for x
    x = 231,010,242.32/18,302.49
  6. Step 6: Final answer
    x = 12,621.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.