Home / 12,840.93-17,708.63-9,856.89

Finding the Fourth Proportional to 12,840.93, 17,708.63 and 9,856.89

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Solution

The fourth proportional to 12,840.93, 17,708.63 and 9,856.89 is: 13,593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.93 : 17,708.63 = 9,856.89 : x
  2. Step 2: Convert to fraction form
    12,840.93/17,708.63 = 9,856.89/x
  3. Step 3: Cross multiply
    12,840.93x = 17,708.63 × 9,856.89
  4. Step 4: Simplify right side
    12,840.93x = 174,551,968.68
  5. Step 5: Solve for x
    x = 174,551,968.68/12,840.93
  6. Step 6: Final answer
    x = 13,593.41

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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.