Home / 13,133.10-18,129.52-7,829.76

Finding the Fourth Proportional to 13,133.10, 18,129.52 and 7,829.76

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Solution

The fourth proportional to 13,133.10, 18,129.52 and 7,829.76 is: 10,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.10 : 18,129.52 = 7,829.76 : x
  2. Step 2: Convert to fraction form
    13,133.10/18,129.52 = 7,829.76/x
  3. Step 3: Cross multiply
    13,133.10x = 18,129.52 × 7,829.76
  4. Step 4: Simplify right side
    13,133.10x = 141,949,790.52
  5. Step 5: Solve for x
    x = 141,949,790.52/13,133.10
  6. Step 6: Final answer
    x = 10,808.55

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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.