Home / 28,107.70-42,146.93-10,333.80

Finding the Fourth Proportional to 28,107.70, 42,146.93 and 10,333.80

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Solution

The fourth proportional to 28,107.70, 42,146.93 and 10,333.80 is: 15,495.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.70 : 42,146.93 = 10,333.80 : x
  2. Step 2: Convert to fraction form
    28,107.70/42,146.93 = 10,333.80/x
  3. Step 3: Cross multiply
    28,107.70x = 42,146.93 × 10,333.80
  4. Step 4: Simplify right side
    28,107.70x = 435,537,971.07
  5. Step 5: Solve for x
    x = 435,537,971.07/28,107.70
  6. Step 6: Final answer
    x = 15,495.33

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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.