Home / 28,271.75-42,406.47-7,212.30

Finding the Fourth Proportional to 28,271.75, 42,406.47 and 7,212.30

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Solution

The fourth proportional to 28,271.75, 42,406.47 and 7,212.30 is: 10,818.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.75 : 42,406.47 = 7,212.30 : x
  2. Step 2: Convert to fraction form
    28,271.75/42,406.47 = 7,212.30/x
  3. Step 3: Cross multiply
    28,271.75x = 42,406.47 × 7,212.30
  4. Step 4: Simplify right side
    28,271.75x = 305,848,210.63
  5. Step 5: Solve for x
    x = 305,848,210.63/28,271.75
  6. Step 6: Final answer
    x = 10,818.16

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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.