Home / 13,899.29-19,176.80-7,930.59

Finding the Fourth Proportional to 13,899.29, 19,176.80 and 7,930.59

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Solution

The fourth proportional to 13,899.29, 19,176.80 and 7,930.59 is: 10,941.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.29 : 19,176.80 = 7,930.59 : x
  2. Step 2: Convert to fraction form
    13,899.29/19,176.80 = 7,930.59/x
  3. Step 3: Cross multiply
    13,899.29x = 19,176.80 × 7,930.59
  4. Step 4: Simplify right side
    13,899.29x = 152,083,298.66
  5. Step 5: Solve for x
    x = 152,083,298.66/13,899.29
  6. Step 6: Final answer
    x = 10,941.81

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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.