Home / 13,288.86-19,939.23-7,445.46

Finding the Fourth Proportional to 13,288.86, 19,939.23 and 7,445.46

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Solution

The fourth proportional to 13,288.86, 19,939.23 and 7,445.46 is: 11,171.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.86 : 19,939.23 = 7,445.46 : x
  2. Step 2: Convert to fraction form
    13,288.86/19,939.23 = 7,445.46/x
  3. Step 3: Cross multiply
    13,288.86x = 19,939.23 × 7,445.46
  4. Step 4: Simplify right side
    13,288.86x = 148,456,739.40
  5. Step 5: Solve for x
    x = 148,456,739.40/13,288.86
  6. Step 6: Final answer
    x = 11,171.52

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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.