Home / 28,911.06-39,903.30-16,977.06

Finding the Fourth Proportional to 28,911.06, 39,903.30 and 16,977.06

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Solution

The fourth proportional to 28,911.06, 39,903.30 and 16,977.06 is: 23,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.06 : 39,903.30 = 16,977.06 : x
  2. Step 2: Convert to fraction form
    28,911.06/39,903.30 = 16,977.06/x
  3. Step 3: Cross multiply
    28,911.06x = 39,903.30 × 16,977.06
  4. Step 4: Simplify right side
    28,911.06x = 677,440,718.30
  5. Step 5: Solve for x
    x = 677,440,718.30/28,911.06
  6. Step 6: Final answer
    x = 23,431.89

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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.