Home / 39,896.01-55,056.22-21,991.03

Finding the Fourth Proportional to 39,896.01, 55,056.22 and 21,991.03

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Solution

The fourth proportional to 39,896.01, 55,056.22 and 21,991.03 is: 30,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,896.01 : 55,056.22 = 21,991.03 : x
  2. Step 2: Convert to fraction form
    39,896.01/55,056.22 = 21,991.03/x
  3. Step 3: Cross multiply
    39,896.01x = 55,056.22 × 21,991.03
  4. Step 4: Simplify right side
    39,896.01x = 1,210,742,985.71
  5. Step 5: Solve for x
    x = 1,210,742,985.71/39,896.01
  6. Step 6: Final answer
    x = 30,347.47

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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.