Home / 39,127.38-53,995.60-21,899.81

Finding the Fourth Proportional to 39,127.38, 53,995.60 and 21,899.81

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Solution

The fourth proportional to 39,127.38, 53,995.60 and 21,899.81 is: 30,221.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,127.38 : 53,995.60 = 21,899.81 : x
  2. Step 2: Convert to fraction form
    39,127.38/53,995.60 = 21,899.81/x
  3. Step 3: Cross multiply
    39,127.38x = 53,995.60 × 21,899.81
  4. Step 4: Simplify right side
    39,127.38x = 1,182,493,271.34
  5. Step 5: Solve for x
    x = 1,182,493,271.34/39,127.38
  6. Step 6: Final answer
    x = 30,221.64

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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.