Home / 28,722.77-39,638.11-15,976.47

Finding the Fourth Proportional to 28,722.77, 39,638.11 and 15,976.47

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Solution

The fourth proportional to 28,722.77, 39,638.11 and 15,976.47 is: 22,047.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.77 : 39,638.11 = 15,976.47 : x
  2. Step 2: Convert to fraction form
    28,722.77/39,638.11 = 15,976.47/x
  3. Step 3: Cross multiply
    28,722.77x = 39,638.11 × 15,976.47
  4. Step 4: Simplify right side
    28,722.77x = 633,277,075.27
  5. Step 5: Solve for x
    x = 633,277,075.27/28,722.77
  6. Step 6: Final answer
    x = 22,047.91

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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.