Home / 15,322.64-21,145.42-8,607.87

Finding the Fourth Proportional to 15,322.64, 21,145.42 and 8,607.87

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Solution

The fourth proportional to 15,322.64, 21,145.42 and 8,607.87 is: 11,878.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.64 : 21,145.42 = 8,607.87 : x
  2. Step 2: Convert to fraction form
    15,322.64/21,145.42 = 8,607.87/x
  3. Step 3: Cross multiply
    15,322.64x = 21,145.42 × 8,607.87
  4. Step 4: Simplify right side
    15,322.64x = 182,017,037.22
  5. Step 5: Solve for x
    x = 182,017,037.22/15,322.64
  6. Step 6: Final answer
    x = 11,878.96

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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.