Home / 20,646.02-31,019.67-13,253.54

Finding the Fourth Proportional to 20,646.02, 31,019.67 and 13,253.54

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Solution

The fourth proportional to 20,646.02, 31,019.67 and 13,253.54 is: 19,912.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.02 : 31,019.67 = 13,253.54 : x
  2. Step 2: Convert to fraction form
    20,646.02/31,019.67 = 13,253.54/x
  3. Step 3: Cross multiply
    20,646.02x = 31,019.67 × 13,253.54
  4. Step 4: Simplify right side
    20,646.02x = 411,120,437.13
  5. Step 5: Solve for x
    x = 411,120,437.13/20,646.02
  6. Step 6: Final answer
    x = 19,912.82

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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.