Home / 15,322.85-21,143.23-8,607.19

Finding the Fourth Proportional to 15,322.85, 21,143.23 and 8,607.19

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Solution

The fourth proportional to 15,322.85, 21,143.23 and 8,607.19 is: 11,876.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.85 : 21,143.23 = 8,607.19 : x
  2. Step 2: Convert to fraction form
    15,322.85/21,143.23 = 8,607.19/x
  3. Step 3: Cross multiply
    15,322.85x = 21,143.23 × 8,607.19
  4. Step 4: Simplify right side
    15,322.85x = 181,983,797.82
  5. Step 5: Solve for x
    x = 181,983,797.82/15,322.85
  6. Step 6: Final answer
    x = 11,876.63

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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.