Home / 13,083.19-18,056.54-7,780.93

Finding the Fourth Proportional to 13,083.19, 18,056.54 and 7,780.93

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Solution

The fourth proportional to 13,083.19, 18,056.54 and 7,780.93 is: 10,738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,083.19 : 18,056.54 = 7,780.93 : x
  2. Step 2: Convert to fraction form
    13,083.19/18,056.54 = 7,780.93/x
  3. Step 3: Cross multiply
    13,083.19x = 18,056.54 × 7,780.93
  4. Step 4: Simplify right side
    13,083.19x = 140,496,673.78
  5. Step 5: Solve for x
    x = 140,496,673.78/13,083.19
  6. Step 6: Final answer
    x = 10,738.72

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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.