Home / 13,602.88-18,783.04-11,085.36

Finding the Fourth Proportional to 13,602.88, 18,783.04 and 11,085.36

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Solution

The fourth proportional to 13,602.88, 18,783.04 and 11,085.36 is: 15,306.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.88 : 18,783.04 = 11,085.36 : x
  2. Step 2: Convert to fraction form
    13,602.88/18,783.04 = 11,085.36/x
  3. Step 3: Cross multiply
    13,602.88x = 18,783.04 × 11,085.36
  4. Step 4: Simplify right side
    13,602.88x = 208,216,760.29
  5. Step 5: Solve for x
    x = 208,216,760.29/13,602.88
  6. Step 6: Final answer
    x = 15,306.81

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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.