Home / 13,881.37-19,144.18-9,840.21

Finding the Fourth Proportional to 13,881.37, 19,144.18 and 9,840.21

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Solution

The fourth proportional to 13,881.37, 19,144.18 and 9,840.21 is: 13,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.37 : 19,144.18 = 9,840.21 : x
  2. Step 2: Convert to fraction form
    13,881.37/19,144.18 = 9,840.21/x
  3. Step 3: Cross multiply
    13,881.37x = 19,144.18 × 9,840.21
  4. Step 4: Simplify right side
    13,881.37x = 188,382,655.76
  5. Step 5: Solve for x
    x = 188,382,655.76/13,881.37
  6. Step 6: Final answer
    x = 13,570.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.