Home / 15,394.56-23,077.86-7,990.35

Finding the Fourth Proportional to 15,394.56, 23,077.86 and 7,990.35

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Solution

The fourth proportional to 15,394.56, 23,077.86 and 7,990.35 is: 11,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.56 : 23,077.86 = 7,990.35 : x
  2. Step 2: Convert to fraction form
    15,394.56/23,077.86 = 7,990.35/x
  3. Step 3: Cross multiply
    15,394.56x = 23,077.86 × 7,990.35
  4. Step 4: Simplify right side
    15,394.56x = 184,400,178.65
  5. Step 5: Solve for x
    x = 184,400,178.65/15,394.56
  6. Step 6: Final answer
    x = 11,978.27

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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.