Home / 28,807.70-43,222.35-11,290.10

Finding the Fourth Proportional to 28,807.70, 43,222.35 and 11,290.10

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Solution

The fourth proportional to 28,807.70, 43,222.35 and 11,290.10 is: 16,939.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.70 : 43,222.35 = 11,290.10 : x
  2. Step 2: Convert to fraction form
    28,807.70/43,222.35 = 11,290.10/x
  3. Step 3: Cross multiply
    28,807.70x = 43,222.35 × 11,290.10
  4. Step 4: Simplify right side
    28,807.70x = 487,984,653.74
  5. Step 5: Solve for x
    x = 487,984,653.74/28,807.70
  6. Step 6: Final answer
    x = 16,939.38

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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.