Home / 10,828.80-14,899.20-10,137.60

Finding the Fourth Proportional to 10,828.80, 14,899.20 and 10,137.60

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Solution

The fourth proportional to 10,828.80, 14,899.20 and 10,137.60 is: 13,948.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,828.80 : 14,899.20 = 10,137.60 : x
  2. Step 2: Convert to fraction form
    10,828.80/14,899.20 = 10,137.60/x
  3. Step 3: Cross multiply
    10,828.80x = 14,899.20 × 10,137.60
  4. Step 4: Simplify right side
    10,828.80x = 151,042,129.92
  5. Step 5: Solve for x
    x = 151,042,129.92/10,828.80
  6. Step 6: Final answer
    x = 13,948.19

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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.