Home / 39,683.37-54,764.64-21,779.01

Finding the Fourth Proportional to 39,683.37, 54,764.64 and 21,779.01

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Solution

The fourth proportional to 39,683.37, 54,764.64 and 21,779.01 is: 30,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,683.37 : 54,764.64 = 21,779.01 : x
  2. Step 2: Convert to fraction form
    39,683.37/54,764.64 = 21,779.01/x
  3. Step 3: Cross multiply
    39,683.37x = 54,764.64 × 21,779.01
  4. Step 4: Simplify right side
    39,683.37x = 1,192,719,642.21
  5. Step 5: Solve for x
    x = 1,192,719,642.21/39,683.37
  6. Step 6: Final answer
    x = 30,055.91

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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.