Home / 13,289.32-19,939.74-7,126.12

Finding the Fourth Proportional to 13,289.32, 19,939.74 and 7,126.12

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Solution

The fourth proportional to 13,289.32, 19,939.74 and 7,126.12 is: 10,692.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.32 : 19,939.74 = 7,126.12 : x
  2. Step 2: Convert to fraction form
    13,289.32/19,939.74 = 7,126.12/x
  3. Step 3: Cross multiply
    13,289.32x = 19,939.74 × 7,126.12
  4. Step 4: Simplify right side
    13,289.32x = 142,092,980.01
  5. Step 5: Solve for x
    x = 142,092,980.01/13,289.32
  6. Step 6: Final answer
    x = 10,692.27

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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.