Home / 28,528.94-42,775.18-11,900.45

Finding the Fourth Proportional to 28,528.94, 42,775.18 and 11,900.45

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Solution

The fourth proportional to 28,528.94, 42,775.18 and 11,900.45 is: 17,843.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,528.94 : 42,775.18 = 11,900.45 : x
  2. Step 2: Convert to fraction form
    28,528.94/42,775.18 = 11,900.45/x
  3. Step 3: Cross multiply
    28,528.94x = 42,775.18 × 11,900.45
  4. Step 4: Simplify right side
    28,528.94x = 509,043,890.83
  5. Step 5: Solve for x
    x = 509,043,890.83/28,528.94
  6. Step 6: Final answer
    x = 17,843.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.