Home / 20,893.64-31,345.08-10,369.40

Finding the Fourth Proportional to 20,893.64, 31,345.08 and 10,369.40

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Solution

The fourth proportional to 20,893.64, 31,345.08 and 10,369.40 is: 15,556.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.64 : 31,345.08 = 10,369.40 : x
  2. Step 2: Convert to fraction form
    20,893.64/31,345.08 = 10,369.40/x
  3. Step 3: Cross multiply
    20,893.64x = 31,345.08 × 10,369.40
  4. Step 4: Simplify right side
    20,893.64x = 325,029,672.55
  5. Step 5: Solve for x
    x = 325,029,672.55/20,893.64
  6. Step 6: Final answer
    x = 15,556.39

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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.