Home / 12,839.51-19,242.87-8,460.05

Finding the Fourth Proportional to 12,839.51, 19,242.87 and 8,460.05

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Solution

The fourth proportional to 12,839.51, 19,242.87 and 8,460.05 is: 12,679.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.51 : 19,242.87 = 8,460.05 : x
  2. Step 2: Convert to fraction form
    12,839.51/19,242.87 = 8,460.05/x
  3. Step 3: Cross multiply
    12,839.51x = 19,242.87 × 8,460.05
  4. Step 4: Simplify right side
    12,839.51x = 162,795,514.40
  5. Step 5: Solve for x
    x = 162,795,514.40/12,839.51
  6. Step 6: Final answer
    x = 12,679.26

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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.