Home / 12,345.03-18,495.99-10,278.33

Finding the Fourth Proportional to 12,345.03, 18,495.99 and 10,278.33

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Solution

The fourth proportional to 12,345.03, 18,495.99 and 10,278.33 is: 15,399.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.03 : 18,495.99 = 10,278.33 : x
  2. Step 2: Convert to fraction form
    12,345.03/18,495.99 = 10,278.33/x
  3. Step 3: Cross multiply
    12,345.03x = 18,495.99 × 10,278.33
  4. Step 4: Simplify right side
    12,345.03x = 190,107,888.90
  5. Step 5: Solve for x
    x = 190,107,888.90/12,345.03
  6. Step 6: Final answer
    x = 15,399.55

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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.