Home / 20,803.87-31,213.59-10,802.37

Finding the Fourth Proportional to 20,803.87, 31,213.59 and 10,802.37

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Solution

The fourth proportional to 20,803.87, 31,213.59 and 10,802.37 is: 16,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.87 : 31,213.59 = 10,802.37 : x
  2. Step 2: Convert to fraction form
    20,803.87/31,213.59 = 10,802.37/x
  3. Step 3: Cross multiply
    20,803.87x = 31,213.59 × 10,802.37
  4. Step 4: Simplify right side
    20,803.87x = 337,180,748.21
  5. Step 5: Solve for x
    x = 337,180,748.21/20,803.87
  6. Step 6: Final answer
    x = 16,207.60

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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.