Home / 28,620.16-39,494.25-15,871.77

Finding the Fourth Proportional to 28,620.16, 39,494.25 and 15,871.77

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Solution

The fourth proportional to 28,620.16, 39,494.25 and 15,871.77 is: 21,902.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.16 : 39,494.25 = 15,871.77 : x
  2. Step 2: Convert to fraction form
    28,620.16/39,494.25 = 15,871.77/x
  3. Step 3: Cross multiply
    28,620.16x = 39,494.25 × 15,871.77
  4. Step 4: Simplify right side
    28,620.16x = 626,843,652.32
  5. Step 5: Solve for x
    x = 626,843,652.32/28,620.16
  6. Step 6: Final answer
    x = 21,902.17

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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.