Home / 20,590.13-30,880.04-7,937.36

Finding the Fourth Proportional to 20,590.13, 30,880.04 and 7,937.36

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Solution

The fourth proportional to 20,590.13, 30,880.04 and 7,937.36 is: 11,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.13 : 30,880.04 = 7,937.36 : x
  2. Step 2: Convert to fraction form
    20,590.13/30,880.04 = 7,937.36/x
  3. Step 3: Cross multiply
    20,590.13x = 30,880.04 × 7,937.36
  4. Step 4: Simplify right side
    20,590.13x = 245,105,800.21
  5. Step 5: Solve for x
    x = 245,105,800.21/20,590.13
  6. Step 6: Final answer
    x = 11,904.05

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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.