Home / 19,981.64-29,973.64-5,190.18

Finding the Fourth Proportional to 19,981.64, 29,973.64 and 5,190.18

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Solution

The fourth proportional to 19,981.64, 29,973.64 and 5,190.18 is: 7,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.64 : 29,973.64 = 5,190.18 : x
  2. Step 2: Convert to fraction form
    19,981.64/29,973.64 = 5,190.18/x
  3. Step 3: Cross multiply
    19,981.64x = 29,973.64 × 5,190.18
  4. Step 4: Simplify right side
    19,981.64x = 155,568,586.86
  5. Step 5: Solve for x
    x = 155,568,586.86/19,981.64
  6. Step 6: Final answer
    x = 7,785.58

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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.