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Finding the Fourth Proportional to 12,809.10, 19,100.63 and 12,352.26

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Solution

The fourth proportional to 12,809.10, 19,100.63 and 12,352.26 is: 18,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.10 : 19,100.63 = 12,352.26 : x
  2. Step 2: Convert to fraction form
    12,809.10/19,100.63 = 12,352.26/x
  3. Step 3: Cross multiply
    12,809.10x = 19,100.63 × 12,352.26
  4. Step 4: Simplify right side
    12,809.10x = 235,935,886.16
  5. Step 5: Solve for x
    x = 235,935,886.16/12,809.10
  6. Step 6: Final answer
    x = 18,419.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.