Home / 12,918.15-19,387.08-8,748.27

Finding the Fourth Proportional to 12,918.15, 19,387.08 and 8,748.27

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Solution

The fourth proportional to 12,918.15, 19,387.08 and 8,748.27 is: 13,129.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.15 : 19,387.08 = 8,748.27 : x
  2. Step 2: Convert to fraction form
    12,918.15/19,387.08 = 8,748.27/x
  3. Step 3: Cross multiply
    12,918.15x = 19,387.08 × 8,748.27
  4. Step 4: Simplify right side
    12,918.15x = 169,603,410.35
  5. Step 5: Solve for x
    x = 169,603,410.35/12,918.15
  6. Step 6: Final answer
    x = 13,129.08

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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.