Home / 20,515.36-30,660.58-14,980.36

Finding the Fourth Proportional to 20,515.36, 30,660.58 and 14,980.36

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Solution

The fourth proportional to 20,515.36, 30,660.58 and 14,980.36 is: 22,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.36 : 30,660.58 = 14,980.36 : x
  2. Step 2: Convert to fraction form
    20,515.36/30,660.58 = 14,980.36/x
  3. Step 3: Cross multiply
    20,515.36x = 30,660.58 × 14,980.36
  4. Step 4: Simplify right side
    20,515.36x = 459,306,526.21
  5. Step 5: Solve for x
    x = 459,306,526.21/20,515.36
  6. Step 6: Final answer
    x = 22,388.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.