Home / 20,835.63-31,259.12-10,972.26

Finding the Fourth Proportional to 20,835.63, 31,259.12 and 10,972.26

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Solution

The fourth proportional to 20,835.63, 31,259.12 and 10,972.26 is: 16,461.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.63 : 31,259.12 = 10,972.26 : x
  2. Step 2: Convert to fraction form
    20,835.63/31,259.12 = 10,972.26/x
  3. Step 3: Cross multiply
    20,835.63x = 31,259.12 × 10,972.26
  4. Step 4: Simplify right side
    20,835.63x = 342,983,137.15
  5. Step 5: Solve for x
    x = 342,983,137.15/20,835.63
  6. Step 6: Final answer
    x = 16,461.38

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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.