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Finding the Fourth Proportional to 28,967.84, 43,457.86 and 9,994.20

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Solution

The fourth proportional to 28,967.84, 43,457.86 and 9,994.20 is: 14,993.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.84 : 43,457.86 = 9,994.20 : x
  2. Step 2: Convert to fraction form
    28,967.84/43,457.86 = 9,994.20/x
  3. Step 3: Cross multiply
    28,967.84x = 43,457.86 × 9,994.20
  4. Step 4: Simplify right side
    28,967.84x = 434,326,327.12
  5. Step 5: Solve for x
    x = 434,326,327.12/28,967.84
  6. Step 6: Final answer
    x = 14,993.40

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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.