Home / 20,953.65-31,427.64-8,303.22

Finding the Fourth Proportional to 20,953.65, 31,427.64 and 8,303.22

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Solution

The fourth proportional to 20,953.65, 31,427.64 and 8,303.22 is: 12,453.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.65 : 31,427.64 = 8,303.22 : x
  2. Step 2: Convert to fraction form
    20,953.65/31,427.64 = 8,303.22/x
  3. Step 3: Cross multiply
    20,953.65x = 31,427.64 × 8,303.22
  4. Step 4: Simplify right side
    20,953.65x = 260,950,609.00
  5. Step 5: Solve for x
    x = 260,950,609.00/20,953.65
  6. Step 6: Final answer
    x = 12,453.71

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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.