Home / 20,763.02-31,121.31-10,903.34

Finding the Fourth Proportional to 20,763.02, 31,121.31 and 10,903.34

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Solution

The fourth proportional to 20,763.02, 31,121.31 and 10,903.34 is: 16,342.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.02 : 31,121.31 = 10,903.34 : x
  2. Step 2: Convert to fraction form
    20,763.02/31,121.31 = 10,903.34/x
  3. Step 3: Cross multiply
    20,763.02x = 31,121.31 × 10,903.34
  4. Step 4: Simplify right side
    20,763.02x = 339,326,224.18
  5. Step 5: Solve for x
    x = 339,326,224.18/20,763.02
  6. Step 6: Final answer
    x = 16,342.82

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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.