Home / 13,881.64-20,823.40-5,117.16

Finding the Fourth Proportional to 13,881.64, 20,823.40 and 5,117.16

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Solution

The fourth proportional to 13,881.64, 20,823.40 and 5,117.16 is: 7,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.64 : 20,823.40 = 5,117.16 : x
  2. Step 2: Convert to fraction form
    13,881.64/20,823.40 = 5,117.16/x
  3. Step 3: Cross multiply
    13,881.64x = 20,823.40 × 5,117.16
  4. Step 4: Simplify right side
    13,881.64x = 106,556,669.54
  5. Step 5: Solve for x
    x = 106,556,669.54/13,881.64
  6. Step 6: Final answer
    x = 7,676.09

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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.