Home / 12,130.56-18,120.51-10,162.26

Finding the Fourth Proportional to 12,130.56, 18,120.51 and 10,162.26

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Solution

The fourth proportional to 12,130.56, 18,120.51 and 10,162.26 is: 15,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.56 : 18,120.51 = 10,162.26 : x
  2. Step 2: Convert to fraction form
    12,130.56/18,120.51 = 10,162.26/x
  3. Step 3: Cross multiply
    12,130.56x = 18,120.51 × 10,162.26
  4. Step 4: Simplify right side
    12,130.56x = 184,145,333.95
  5. Step 5: Solve for x
    x = 184,145,333.95/12,130.56
  6. Step 6: Final answer
    x = 15,180.28

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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.