Home / 39,816.32-54,946.72-21,913.12

Finding the Fourth Proportional to 39,816.32, 54,946.72 and 21,913.12

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Solution

The fourth proportional to 39,816.32, 54,946.72 and 21,913.12 is: 30,240.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,816.32 : 54,946.72 = 21,913.12 : x
  2. Step 2: Convert to fraction form
    39,816.32/54,946.72 = 21,913.12/x
  3. Step 3: Cross multiply
    39,816.32x = 54,946.72 × 21,913.12
  4. Step 4: Simplify right side
    39,816.32x = 1,204,054,068.97
  5. Step 5: Solve for x
    x = 1,204,054,068.97/39,816.32
  6. Step 6: Final answer
    x = 30,240.21

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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.