Home / 28,647.64-39,533.13-15,900.08

Finding the Fourth Proportional to 28,647.64, 39,533.13 and 15,900.08

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Solution

The fourth proportional to 28,647.64, 39,533.13 and 15,900.08 is: 21,941.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.64 : 39,533.13 = 15,900.08 : x
  2. Step 2: Convert to fraction form
    28,647.64/39,533.13 = 15,900.08/x
  3. Step 3: Cross multiply
    28,647.64x = 39,533.13 × 15,900.08
  4. Step 4: Simplify right side
    28,647.64x = 628,579,761.39
  5. Step 5: Solve for x
    x = 628,579,761.39/28,647.64
  6. Step 6: Final answer
    x = 21,941.77

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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.