Home / 38,739.71-53,461.86-21,745.01

Finding the Fourth Proportional to 38,739.71, 53,461.86 and 21,745.01

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Solution

The fourth proportional to 38,739.71, 53,461.86 and 21,745.01 is: 30,008.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,739.71 : 53,461.86 = 21,745.01 : x
  2. Step 2: Convert to fraction form
    38,739.71/53,461.86 = 21,745.01/x
  3. Step 3: Cross multiply
    38,739.71x = 53,461.86 × 21,745.01
  4. Step 4: Simplify right side
    38,739.71x = 1,162,528,680.32
  5. Step 5: Solve for x
    x = 1,162,528,680.32/38,739.71
  6. Step 6: Final answer
    x = 30,008.71

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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.