Home / 20,090.16-30,139.28-6,943.04

Finding the Fourth Proportional to 20,090.16, 30,139.28 and 6,943.04

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Solution

The fourth proportional to 20,090.16, 30,139.28 and 6,943.04 is: 10,415.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.16 : 30,139.28 = 6,943.04 : x
  2. Step 2: Convert to fraction form
    20,090.16/30,139.28 = 6,943.04/x
  3. Step 3: Cross multiply
    20,090.16x = 30,139.28 × 6,943.04
  4. Step 4: Simplify right side
    20,090.16x = 209,258,226.61
  5. Step 5: Solve for x
    x = 209,258,226.61/20,090.16
  6. Step 6: Final answer
    x = 10,415.96

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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.