Home / 11,865.12-16,373.44-7,148.48

Finding the Fourth Proportional to 11,865.12, 16,373.44 and 7,148.48

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Solution

The fourth proportional to 11,865.12, 16,373.44 and 7,148.48 is: 9,864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,865.12 : 16,373.44 = 7,148.48 : x
  2. Step 2: Convert to fraction form
    11,865.12/16,373.44 = 7,148.48/x
  3. Step 3: Cross multiply
    11,865.12x = 16,373.44 × 7,148.48
  4. Step 4: Simplify right side
    11,865.12x = 117,045,208.37
  5. Step 5: Solve for x
    x = 117,045,208.37/11,865.12
  6. Step 6: Final answer
    x = 9,864.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.