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Finding the Fourth Proportional to 15,392.01, 23,079.75 and 7,978.08

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Solution

The fourth proportional to 15,392.01, 23,079.75 and 7,978.08 is: 11,962.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,392.01 : 23,079.75 = 7,978.08 : x
  2. Step 2: Convert to fraction form
    15,392.01/23,079.75 = 7,978.08/x
  3. Step 3: Cross multiply
    15,392.01x = 23,079.75 × 7,978.08
  4. Step 4: Simplify right side
    15,392.01x = 184,132,091.88
  5. Step 5: Solve for x
    x = 184,132,091.88/15,392.01
  6. Step 6: Final answer
    x = 11,962.84

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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.