Home / 18,331.63-27,482.05-12,768.55

Finding the Fourth Proportional to 18,331.63, 27,482.05 and 12,768.55

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Solution

The fourth proportional to 18,331.63, 27,482.05 and 12,768.55 is: 19,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.63 : 27,482.05 = 12,768.55 : x
  2. Step 2: Convert to fraction form
    18,331.63/27,482.05 = 12,768.55/x
  3. Step 3: Cross multiply
    18,331.63x = 27,482.05 × 12,768.55
  4. Step 4: Simplify right side
    18,331.63x = 350,905,929.53
  5. Step 5: Solve for x
    x = 350,905,929.53/18,331.63
  6. Step 6: Final answer
    x = 19,142.10

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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.