Home / 27,698.06-38,223.30-15,122.81

Finding the Fourth Proportional to 27,698.06, 38,223.30 and 15,122.81

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Solution

The fourth proportional to 27,698.06, 38,223.30 and 15,122.81 is: 20,869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,698.06 : 38,223.30 = 15,122.81 : x
  2. Step 2: Convert to fraction form
    27,698.06/38,223.30 = 15,122.81/x
  3. Step 3: Cross multiply
    27,698.06x = 38,223.30 × 15,122.81
  4. Step 4: Simplify right side
    27,698.06x = 578,043,703.47
  5. Step 5: Solve for x
    x = 578,043,703.47/27,698.06
  6. Step 6: Final answer
    x = 20,869.47

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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.