Home / 13,083.76-18,055.98-7,115.86

Finding the Fourth Proportional to 13,083.76, 18,055.98 and 7,115.86

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Solution

The fourth proportional to 13,083.76, 18,055.98 and 7,115.86 is: 9,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,083.76 : 18,055.98 = 7,115.86 : x
  2. Step 2: Convert to fraction form
    13,083.76/18,055.98 = 7,115.86/x
  3. Step 3: Cross multiply
    13,083.76x = 18,055.98 × 7,115.86
  4. Step 4: Simplify right side
    13,083.76x = 128,483,825.84
  5. Step 5: Solve for x
    x = 128,483,825.84/13,083.76
  6. Step 6: Final answer
    x = 9,820.10

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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.