Home / 12,621.41-17,417.61-7,319.37

Finding the Fourth Proportional to 12,621.41, 17,417.61 and 7,319.37

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Solution

The fourth proportional to 12,621.41, 17,417.61 and 7,319.37 is: 10,100.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.41 : 17,417.61 = 7,319.37 : x
  2. Step 2: Convert to fraction form
    12,621.41/17,417.61 = 7,319.37/x
  3. Step 3: Cross multiply
    12,621.41x = 17,417.61 × 7,319.37
  4. Step 4: Simplify right side
    12,621.41x = 127,485,932.11
  5. Step 5: Solve for x
    x = 127,485,932.11/12,621.41
  6. Step 6: Final answer
    x = 10,100.77

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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.