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Finding the Fourth Proportional to 8,994.16, 12,420.49 and 8,503.30

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Solution

The fourth proportional to 8,994.16, 12,420.49 and 8,503.30 is: 11,742.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,994.16 : 12,420.49 = 8,503.30 : x
  2. Step 2: Convert to fraction form
    8,994.16/12,420.49 = 8,503.30/x
  3. Step 3: Cross multiply
    8,994.16x = 12,420.49 × 8,503.30
  4. Step 4: Simplify right side
    8,994.16x = 105,615,090.51
  5. Step 5: Solve for x
    x = 105,615,090.51/8,994.16
  6. Step 6: Final answer
    x = 11,742.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.