Home / 13,821.09-19,073.15-7,854.74

Finding the Fourth Proportional to 13,821.09, 19,073.15 and 7,854.74

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Solution

The fourth proportional to 13,821.09, 19,073.15 and 7,854.74 is: 10,839.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.09 : 19,073.15 = 7,854.74 : x
  2. Step 2: Convert to fraction form
    13,821.09/19,073.15 = 7,854.74/x
  3. Step 3: Cross multiply
    13,821.09x = 19,073.15 × 7,854.74
  4. Step 4: Simplify right side
    13,821.09x = 149,814,634.23
  5. Step 5: Solve for x
    x = 149,814,634.23/13,821.09
  6. Step 6: Final answer
    x = 10,839.57

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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.