Home / 39,889.37-55,045.08-21,984.32

Finding the Fourth Proportional to 39,889.37, 55,045.08 and 21,984.32

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Solution

The fourth proportional to 39,889.37, 55,045.08 and 21,984.32 is: 30,337.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.37 : 55,045.08 = 21,984.32 : x
  2. Step 2: Convert to fraction form
    39,889.37/55,045.08 = 21,984.32/x
  3. Step 3: Cross multiply
    39,889.37x = 55,045.08 × 21,984.32
  4. Step 4: Simplify right side
    39,889.37x = 1,210,128,377.92
  5. Step 5: Solve for x
    x = 1,210,128,377.92/39,889.37
  6. Step 6: Final answer
    x = 30,337.12

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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.