Home / 10,509.36-15,765.57-3,112.86

Finding the Fourth Proportional to 10,509.36, 15,765.57 and 3,112.86

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Solution

The fourth proportional to 10,509.36, 15,765.57 and 3,112.86 is: 4,669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,509.36 : 15,765.57 = 3,112.86 : x
  2. Step 2: Convert to fraction form
    10,509.36/15,765.57 = 3,112.86/x
  3. Step 3: Cross multiply
    10,509.36x = 15,765.57 × 3,112.86
  4. Step 4: Simplify right side
    10,509.36x = 49,075,951.46
  5. Step 5: Solve for x
    x = 49,075,951.46/10,509.36
  6. Step 6: Final answer
    x = 4,669.74

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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.