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Finding the Fourth Proportional to 15,388.34, 23,074.29 and 7,985.34

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Solution

The fourth proportional to 15,388.34, 23,074.29 and 7,985.34 is: 11,973.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.34 : 23,074.29 = 7,985.34 : x
  2. Step 2: Convert to fraction form
    15,388.34/23,074.29 = 7,985.34/x
  3. Step 3: Cross multiply
    15,388.34x = 23,074.29 × 7,985.34
  4. Step 4: Simplify right side
    15,388.34x = 184,256,050.91
  5. Step 5: Solve for x
    x = 184,256,050.91/15,388.34
  6. Step 6: Final answer
    x = 11,973.75

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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.