Home / 12,740.09-19,112.19-4,425.05

Finding the Fourth Proportional to 12,740.09, 19,112.19 and 4,425.05

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Solution

The fourth proportional to 12,740.09, 19,112.19 and 4,425.05 is: 6,638.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.09 : 19,112.19 = 4,425.05 : x
  2. Step 2: Convert to fraction form
    12,740.09/19,112.19 = 4,425.05/x
  3. Step 3: Cross multiply
    12,740.09x = 19,112.19 × 4,425.05
  4. Step 4: Simplify right side
    12,740.09x = 84,572,300.80
  5. Step 5: Solve for x
    x = 84,572,300.80/12,740.09
  6. Step 6: Final answer
    x = 6,638.28

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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.