Home / 13,155.77-19,720.83-5,255.93

Finding the Fourth Proportional to 13,155.77, 19,720.83 and 5,255.93

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Solution

The fourth proportional to 13,155.77, 19,720.83 and 5,255.93 is: 7,878.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.77 : 19,720.83 = 5,255.93 : x
  2. Step 2: Convert to fraction form
    13,155.77/19,720.83 = 5,255.93/x
  3. Step 3: Cross multiply
    13,155.77x = 19,720.83 × 5,255.93
  4. Step 4: Simplify right side
    13,155.77x = 103,651,302.02
  5. Step 5: Solve for x
    x = 103,651,302.02/13,155.77
  6. Step 6: Final answer
    x = 7,878.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.