Home / 13,611.27-18,783.07-7,643.19

Finding the Fourth Proportional to 13,611.27, 18,783.07 and 7,643.19

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Solution

The fourth proportional to 13,611.27, 18,783.07 and 7,643.19 is: 10,547.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.27 : 18,783.07 = 7,643.19 : x
  2. Step 2: Convert to fraction form
    13,611.27/18,783.07 = 7,643.19/x
  3. Step 3: Cross multiply
    13,611.27x = 18,783.07 × 7,643.19
  4. Step 4: Simplify right side
    13,611.27x = 143,562,572.79
  5. Step 5: Solve for x
    x = 143,562,572.79/13,611.27
  6. Step 6: Final answer
    x = 10,547.33

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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.