Home / 12,943.60-19,418.10-7,392.40

Finding the Fourth Proportional to 12,943.60, 19,418.10 and 7,392.40

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Solution

The fourth proportional to 12,943.60, 19,418.10 and 7,392.40 is: 11,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.60 : 19,418.10 = 7,392.40 : x
  2. Step 2: Convert to fraction form
    12,943.60/19,418.10 = 7,392.40/x
  3. Step 3: Cross multiply
    12,943.60x = 19,418.10 × 7,392.40
  4. Step 4: Simplify right side
    12,943.60x = 143,546,362.44
  5. Step 5: Solve for x
    x = 143,546,362.44/12,943.60
  6. Step 6: Final answer
    x = 11,090.14

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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.