Home / 28,619.84-39,499.20-16,686.88

Finding the Fourth Proportional to 28,619.84, 39,499.20 and 16,686.88

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Solution

The fourth proportional to 28,619.84, 39,499.20 and 16,686.88 is: 23,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.84 : 39,499.20 = 16,686.88 : x
  2. Step 2: Convert to fraction form
    28,619.84/39,499.20 = 16,686.88/x
  3. Step 3: Cross multiply
    28,619.84x = 39,499.20 × 16,686.88
  4. Step 4: Simplify right side
    28,619.84x = 659,118,410.50
  5. Step 5: Solve for x
    x = 659,118,410.50/28,619.84
  6. Step 6: Final answer
    x = 23,030.12

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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.