Home / 13,921.25-19,211.22-7,547.85

Finding the Fourth Proportional to 13,921.25, 19,211.22 and 7,547.85

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Solution

The fourth proportional to 13,921.25, 19,211.22 and 7,547.85 is: 10,415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.25 : 19,211.22 = 7,547.85 : x
  2. Step 2: Convert to fraction form
    13,921.25/19,211.22 = 7,547.85/x
  3. Step 3: Cross multiply
    13,921.25x = 19,211.22 × 7,547.85
  4. Step 4: Simplify right side
    13,921.25x = 145,003,406.88
  5. Step 5: Solve for x
    x = 145,003,406.88/13,921.25
  6. Step 6: Final answer
    x = 10,415.98

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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.