Home / 28,004.14-42,013.37-9,289.40

Finding the Fourth Proportional to 28,004.14, 42,013.37 and 9,289.40

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Solution

The fourth proportional to 28,004.14, 42,013.37 and 9,289.40 is: 13,936.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.14 : 42,013.37 = 9,289.40 : x
  2. Step 2: Convert to fraction form
    28,004.14/42,013.37 = 9,289.40/x
  3. Step 3: Cross multiply
    28,004.14x = 42,013.37 × 9,289.40
  4. Step 4: Simplify right side
    28,004.14x = 390,278,858.45
  5. Step 5: Solve for x
    x = 390,278,858.45/28,004.14
  6. Step 6: Final answer
    x = 13,936.47

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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.