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Finding the Fourth Proportional to 30,319.88, 45,486.48 and 9,261.68

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Solution

The fourth proportional to 30,319.88, 45,486.48 and 9,261.68 is: 13,894.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,319.88 : 45,486.48 = 9,261.68 : x
  2. Step 2: Convert to fraction form
    30,319.88/45,486.48 = 9,261.68/x
  3. Step 3: Cross multiply
    30,319.88x = 45,486.48 × 9,261.68
  4. Step 4: Simplify right side
    30,319.88x = 421,281,222.09
  5. Step 5: Solve for x
    x = 421,281,222.09/30,319.88
  6. Step 6: Final answer
    x = 13,894.55

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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.