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Finding the Fourth Proportional to 15,395.85, 23,085.54 and 7,992.86

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Solution

The fourth proportional to 15,395.85, 23,085.54 and 7,992.86 is: 11,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.85 : 23,085.54 = 7,992.86 : x
  2. Step 2: Convert to fraction form
    15,395.85/23,085.54 = 7,992.86/x
  3. Step 3: Cross multiply
    15,395.85x = 23,085.54 × 7,992.86
  4. Step 4: Simplify right side
    15,395.85x = 184,519,373.82
  5. Step 5: Solve for x
    x = 184,519,373.82/15,395.85
  6. Step 6: Final answer
    x = 11,985.01

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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.