Home / 20,599.61-28,429.04-11,647.28

Finding the Fourth Proportional to 20,599.61, 28,429.04 and 11,647.28

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Solution

The fourth proportional to 20,599.61, 28,429.04 and 11,647.28 is: 16,074.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.61 : 28,429.04 = 11,647.28 : x
  2. Step 2: Convert to fraction form
    20,599.61/28,429.04 = 11,647.28/x
  3. Step 3: Cross multiply
    20,599.61x = 28,429.04 × 11,647.28
  4. Step 4: Simplify right side
    20,599.61x = 331,121,089.20
  5. Step 5: Solve for x
    x = 331,121,089.20/20,599.61
  6. Step 6: Final answer
    x = 16,074.15

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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.