Home / 20,015.65-29,981.93-11,670.35

Finding the Fourth Proportional to 20,015.65, 29,981.93 and 11,670.35

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Solution

The fourth proportional to 20,015.65, 29,981.93 and 11,670.35 is: 17,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.65 : 29,981.93 = 11,670.35 : x
  2. Step 2: Convert to fraction form
    20,015.65/29,981.93 = 11,670.35/x
  3. Step 3: Cross multiply
    20,015.65x = 29,981.93 × 11,670.35
  4. Step 4: Simplify right side
    20,015.65x = 349,899,720.91
  5. Step 5: Solve for x
    x = 349,899,720.91/20,015.65
  6. Step 6: Final answer
    x = 17,481.31

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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.