Home / 20,818.88-31,203.44-10,953.08

Finding the Fourth Proportional to 20,818.88, 31,203.44 and 10,953.08

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Solution

The fourth proportional to 20,818.88, 31,203.44 and 10,953.08 is: 16,416.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.88 : 31,203.44 = 10,953.08 : x
  2. Step 2: Convert to fraction form
    20,818.88/31,203.44 = 10,953.08/x
  3. Step 3: Cross multiply
    20,818.88x = 31,203.44 × 10,953.08
  4. Step 4: Simplify right side
    20,818.88x = 341,773,774.60
  5. Step 5: Solve for x
    x = 341,773,774.60/20,818.88
  6. Step 6: Final answer
    x = 16,416.53

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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.