Home / 13,637.80-18,821.27-7,669.12

Finding the Fourth Proportional to 13,637.80, 18,821.27 and 7,669.12

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Solution

The fourth proportional to 13,637.80, 18,821.27 and 7,669.12 is: 10,584.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.80 : 18,821.27 = 7,669.12 : x
  2. Step 2: Convert to fraction form
    13,637.80/18,821.27 = 7,669.12/x
  3. Step 3: Cross multiply
    13,637.80x = 18,821.27 × 7,669.12
  4. Step 4: Simplify right side
    13,637.80x = 144,342,578.18
  5. Step 5: Solve for x
    x = 144,342,578.18/13,637.80
  6. Step 6: Final answer
    x = 10,584.01

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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.