Home / 13,671.23-18,867.06-7,621.61

Finding the Fourth Proportional to 13,671.23, 18,867.06 and 7,621.61

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Solution

The fourth proportional to 13,671.23, 18,867.06 and 7,621.61 is: 10,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.23 : 18,867.06 = 7,621.61 : x
  2. Step 2: Convert to fraction form
    13,671.23/18,867.06 = 7,621.61/x
  3. Step 3: Cross multiply
    13,671.23x = 18,867.06 × 7,621.61
  4. Step 4: Simplify right side
    13,671.23x = 143,797,278.83
  5. Step 5: Solve for x
    x = 143,797,278.83/13,671.23
  6. Step 6: Final answer
    x = 10,518.24

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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.