Home / 21,238.08-31,857.84-5,655.72

Finding the Fourth Proportional to 21,238.08, 31,857.84 and 5,655.72

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Solution

The fourth proportional to 21,238.08, 31,857.84 and 5,655.72 is: 8,483.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.08 : 31,857.84 = 5,655.72 : x
  2. Step 2: Convert to fraction form
    21,238.08/31,857.84 = 5,655.72/x
  3. Step 3: Cross multiply
    21,238.08x = 31,857.84 × 5,655.72
  4. Step 4: Simplify right side
    21,238.08x = 180,179,022.84
  5. Step 5: Solve for x
    x = 180,179,022.84/21,238.08
  6. Step 6: Final answer
    x = 8,483.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.