Home / 13,386.21-20,086.20-6,374.18

Finding the Fourth Proportional to 13,386.21, 20,086.20 and 6,374.18

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Solution

The fourth proportional to 13,386.21, 20,086.20 and 6,374.18 is: 9,564.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.21 : 20,086.20 = 6,374.18 : x
  2. Step 2: Convert to fraction form
    13,386.21/20,086.20 = 6,374.18/x
  3. Step 3: Cross multiply
    13,386.21x = 20,086.20 × 6,374.18
  4. Step 4: Simplify right side
    13,386.21x = 128,032,953.89
  5. Step 5: Solve for x
    x = 128,032,953.89/13,386.21
  6. Step 6: Final answer
    x = 9,564.54

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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.