Home / 28,059.07-38,721.29-15,311.97

Finding the Fourth Proportional to 28,059.07, 38,721.29 and 15,311.97

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Solution

The fourth proportional to 28,059.07, 38,721.29 and 15,311.97 is: 21,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.07 : 38,721.29 = 15,311.97 : x
  2. Step 2: Convert to fraction form
    28,059.07/38,721.29 = 15,311.97/x
  3. Step 3: Cross multiply
    28,059.07x = 38,721.29 × 15,311.97
  4. Step 4: Simplify right side
    28,059.07x = 592,899,230.84
  5. Step 5: Solve for x
    x = 592,899,230.84/28,059.07
  6. Step 6: Final answer
    x = 21,130.39

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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.