Home / 20,686.86-31,030.25-7,533.86

Finding the Fourth Proportional to 20,686.86, 31,030.25 and 7,533.86

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Solution

The fourth proportional to 20,686.86, 31,030.25 and 7,533.86 is: 11,300.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.86 : 31,030.25 = 7,533.86 : x
  2. Step 2: Convert to fraction form
    20,686.86/31,030.25 = 7,533.86/x
  3. Step 3: Cross multiply
    20,686.86x = 31,030.25 × 7,533.86
  4. Step 4: Simplify right side
    20,686.86x = 233,777,366.44
  5. Step 5: Solve for x
    x = 233,777,366.44/20,686.86
  6. Step 6: Final answer
    x = 11,300.77

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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.