Home / 28,647.16-39,533.10-15,900.35

Finding the Fourth Proportional to 28,647.16, 39,533.10 and 15,900.35

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Solution

The fourth proportional to 28,647.16, 39,533.10 and 15,900.35 is: 21,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.16 : 39,533.10 = 15,900.35 : x
  2. Step 2: Convert to fraction form
    28,647.16/39,533.10 = 15,900.35/x
  3. Step 3: Cross multiply
    28,647.16x = 39,533.10 × 15,900.35
  4. Step 4: Simplify right side
    28,647.16x = 628,589,869.29
  5. Step 5: Solve for x
    x = 628,589,869.29/28,647.16
  6. Step 6: Final answer
    x = 21,942.49

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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.