Home / 39,127.24-53,995.74-21,222.40

Finding the Fourth Proportional to 39,127.24, 53,995.74 and 21,222.40

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Solution

The fourth proportional to 39,127.24, 53,995.74 and 21,222.40 is: 29,286.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,127.24 : 53,995.74 = 21,222.40 : x
  2. Step 2: Convert to fraction form
    39,127.24/53,995.74 = 21,222.40/x
  3. Step 3: Cross multiply
    39,127.24x = 53,995.74 × 21,222.40
  4. Step 4: Simplify right side
    39,127.24x = 1,145,919,192.58
  5. Step 5: Solve for x
    x = 1,145,919,192.58/39,127.24
  6. Step 6: Final answer
    x = 29,286.99

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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.