Home / 13,746.47-20,620.13-10,782.14

Finding the Fourth Proportional to 13,746.47, 20,620.13 and 10,782.14

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Solution

The fourth proportional to 13,746.47, 20,620.13 and 10,782.14 is: 16,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.47 : 20,620.13 = 10,782.14 : x
  2. Step 2: Convert to fraction form
    13,746.47/20,620.13 = 10,782.14/x
  3. Step 3: Cross multiply
    13,746.47x = 20,620.13 × 10,782.14
  4. Step 4: Simplify right side
    13,746.47x = 222,328,971.47
  5. Step 5: Solve for x
    x = 222,328,971.47/13,746.47
  6. Step 6: Final answer
    x = 16,173.54

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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.