Home / 13,921.69-19,212.15-7,548.40

Finding the Fourth Proportional to 13,921.69, 19,212.15 and 7,548.40

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Solution

The fourth proportional to 13,921.69, 19,212.15 and 7,548.40 is: 10,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.69 : 19,212.15 = 7,548.40 : x
  2. Step 2: Convert to fraction form
    13,921.69/19,212.15 = 7,548.40/x
  3. Step 3: Cross multiply
    13,921.69x = 19,212.15 × 7,548.40
  4. Step 4: Simplify right side
    13,921.69x = 145,020,993.06
  5. Step 5: Solve for x
    x = 145,020,993.06/13,921.69
  6. Step 6: Final answer
    x = 10,416.91

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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.