Home / 20,835.86-31,266.75-15,203.66

Finding the Fourth Proportional to 20,835.86, 31,266.75 and 15,203.66

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Solution

The fourth proportional to 20,835.86, 31,266.75 and 15,203.66 is: 22,814.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.86 : 31,266.75 = 15,203.66 : x
  2. Step 2: Convert to fraction form
    20,835.86/31,266.75 = 15,203.66/x
  3. Step 3: Cross multiply
    20,835.86x = 31,266.75 × 15,203.66
  4. Step 4: Simplify right side
    20,835.86x = 475,369,036.31
  5. Step 5: Solve for x
    x = 475,369,036.31/20,835.86
  6. Step 6: Final answer
    x = 22,814.95

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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.