Home / 20,798.91-31,153.17-12,903.36

Finding the Fourth Proportional to 20,798.91, 31,153.17 and 12,903.36

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Solution

The fourth proportional to 20,798.91, 31,153.17 and 12,903.36 is: 19,327.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.91 : 31,153.17 = 12,903.36 : x
  2. Step 2: Convert to fraction form
    20,798.91/31,153.17 = 12,903.36/x
  3. Step 3: Cross multiply
    20,798.91x = 31,153.17 × 12,903.36
  4. Step 4: Simplify right side
    20,798.91x = 401,980,567.65
  5. Step 5: Solve for x
    x = 401,980,567.65/20,798.91
  6. Step 6: Final answer
    x = 19,327.00

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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.