Home / 13,135.26-18,124.17-7,830.57

Finding the Fourth Proportional to 13,135.26, 18,124.17 and 7,830.57

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Solution

The fourth proportional to 13,135.26, 18,124.17 and 7,830.57 is: 10,804.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.26 : 18,124.17 = 7,830.57 : x
  2. Step 2: Convert to fraction form
    13,135.26/18,124.17 = 7,830.57/x
  3. Step 3: Cross multiply
    13,135.26x = 18,124.17 × 7,830.57
  4. Step 4: Simplify right side
    13,135.26x = 141,922,581.88
  5. Step 5: Solve for x
    x = 141,922,581.88/13,135.26
  6. Step 6: Final answer
    x = 10,804.70

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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.