Home / 12,519.42-18,783.45-7,842.90

Finding the Fourth Proportional to 12,519.42, 18,783.45 and 7,842.90

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Solution

The fourth proportional to 12,519.42, 18,783.45 and 7,842.90 is: 11,767.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.42 : 18,783.45 = 7,842.90 : x
  2. Step 2: Convert to fraction form
    12,519.42/18,783.45 = 7,842.90/x
  3. Step 3: Cross multiply
    12,519.42x = 18,783.45 × 7,842.90
  4. Step 4: Simplify right side
    12,519.42x = 147,316,720.01
  5. Step 5: Solve for x
    x = 147,316,720.01/12,519.42
  6. Step 6: Final answer
    x = 11,767.06

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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.