Home / 13,821.66-19,075.37-7,854.80

Finding the Fourth Proportional to 13,821.66, 19,075.37 and 7,854.80

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Solution

The fourth proportional to 13,821.66, 19,075.37 and 7,854.80 is: 10,840.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.66 : 19,075.37 = 7,854.80 : x
  2. Step 2: Convert to fraction form
    13,821.66/19,075.37 = 7,854.80/x
  3. Step 3: Cross multiply
    13,821.66x = 19,075.37 × 7,854.80
  4. Step 4: Simplify right side
    13,821.66x = 149,833,081.63
  5. Step 5: Solve for x
    x = 149,833,081.63/13,821.66
  6. Step 6: Final answer
    x = 10,840.45

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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.