Home / 20,130.04-30,201.90-6,279.40

Finding the Fourth Proportional to 20,130.04, 30,201.90 and 6,279.40

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Solution

The fourth proportional to 20,130.04, 30,201.90 and 6,279.40 is: 9,421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.04 : 30,201.90 = 6,279.40 : x
  2. Step 2: Convert to fraction form
    20,130.04/30,201.90 = 6,279.40/x
  3. Step 3: Cross multiply
    20,130.04x = 30,201.90 × 6,279.40
  4. Step 4: Simplify right side
    20,130.04x = 189,649,810.86
  5. Step 5: Solve for x
    x = 189,649,810.86/20,130.04
  6. Step 6: Final answer
    x = 9,421.23

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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.