Home / 10,128.26-13,970.10-8,799.62

Finding the Fourth Proportional to 10,128.26, 13,970.10 and 8,799.62

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Solution

The fourth proportional to 10,128.26, 13,970.10 and 8,799.62 is: 12,137.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.26 : 13,970.10 = 8,799.62 : x
  2. Step 2: Convert to fraction form
    10,128.26/13,970.10 = 8,799.62/x
  3. Step 3: Cross multiply
    10,128.26x = 13,970.10 × 8,799.62
  4. Step 4: Simplify right side
    10,128.26x = 122,931,571.36
  5. Step 5: Solve for x
    x = 122,931,571.36/10,128.26
  6. Step 6: Final answer
    x = 12,137.48

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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.