Home / 12,581.44-17,362.48-7,868.40

Finding the Fourth Proportional to 12,581.44, 17,362.48 and 7,868.40

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Solution

The fourth proportional to 12,581.44, 17,362.48 and 7,868.40 is: 10,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.44 : 17,362.48 = 7,868.40 : x
  2. Step 2: Convert to fraction form
    12,581.44/17,362.48 = 7,868.40/x
  3. Step 3: Cross multiply
    12,581.44x = 17,362.48 × 7,868.40
  4. Step 4: Simplify right side
    12,581.44x = 136,614,937.63
  5. Step 5: Solve for x
    x = 136,614,937.63/12,581.44
  6. Step 6: Final answer
    x = 10,858.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.