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Finding the Fourth Proportional to 12,551.40, 18,827.10 and 5,153.40

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Solution

The fourth proportional to 12,551.40, 18,827.10 and 5,153.40 is: 7,730.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.40 : 18,827.10 = 5,153.40 : x
  2. Step 2: Convert to fraction form
    12,551.40/18,827.10 = 5,153.40/x
  3. Step 3: Cross multiply
    12,551.40x = 18,827.10 × 5,153.40
  4. Step 4: Simplify right side
    12,551.40x = 97,023,577.14
  5. Step 5: Solve for x
    x = 97,023,577.14/12,551.40
  6. Step 6: Final answer
    x = 7,730.10

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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.