Home / 13,871.66-19,142.87-7,498.25

Finding the Fourth Proportional to 13,871.66, 19,142.87 and 7,498.25

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Solution

The fourth proportional to 13,871.66, 19,142.87 and 7,498.25 is: 10,347.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.66 : 19,142.87 = 7,498.25 : x
  2. Step 2: Convert to fraction form
    13,871.66/19,142.87 = 7,498.25/x
  3. Step 3: Cross multiply
    13,871.66x = 19,142.87 × 7,498.25
  4. Step 4: Simplify right side
    13,871.66x = 143,537,891.77
  5. Step 5: Solve for x
    x = 143,537,891.77/13,871.66
  6. Step 6: Final answer
    x = 10,347.57

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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.