Home / 28,271.70-39,013.65-15,697.26

Finding the Fourth Proportional to 28,271.70, 39,013.65 and 15,697.26

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Solution

The fourth proportional to 28,271.70, 39,013.65 and 15,697.26 is: 21,661.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.70 : 39,013.65 = 15,697.26 : x
  2. Step 2: Convert to fraction form
    28,271.70/39,013.65 = 15,697.26/x
  3. Step 3: Cross multiply
    28,271.70x = 39,013.65 × 15,697.26
  4. Step 4: Simplify right side
    28,271.70x = 612,407,407.60
  5. Step 5: Solve for x
    x = 612,407,407.60/28,271.70
  6. Step 6: Final answer
    x = 21,661.50

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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.