Home / 20,975.77-28,946.32-11,544.13

Finding the Fourth Proportional to 20,975.77, 28,946.32 and 11,544.13

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Solution

The fourth proportional to 20,975.77, 28,946.32 and 11,544.13 is: 15,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.77 : 28,946.32 = 11,544.13 : x
  2. Step 2: Convert to fraction form
    20,975.77/28,946.32 = 11,544.13/x
  3. Step 3: Cross multiply
    20,975.77x = 28,946.32 × 11,544.13
  4. Step 4: Simplify right side
    20,975.77x = 334,160,081.10
  5. Step 5: Solve for x
    x = 334,160,081.10/20,975.77
  6. Step 6: Final answer
    x = 15,930.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.