Home / 13,389.21-20,090.70-6,377.18

Finding the Fourth Proportional to 13,389.21, 20,090.70 and 6,377.18

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Solution

The fourth proportional to 13,389.21, 20,090.70 and 6,377.18 is: 9,569.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.21 : 20,090.70 = 6,377.18 : x
  2. Step 2: Convert to fraction form
    13,389.21/20,090.70 = 6,377.18/x
  3. Step 3: Cross multiply
    13,389.21x = 20,090.70 × 6,377.18
  4. Step 4: Simplify right side
    13,389.21x = 128,121,909.77
  5. Step 5: Solve for x
    x = 128,121,909.77/13,389.21
  6. Step 6: Final answer
    x = 9,569.04

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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.