Home / 13,653.23-18,836.90-11,130.99

Finding the Fourth Proportional to 13,653.23, 18,836.90 and 11,130.99

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Solution

The fourth proportional to 13,653.23, 18,836.90 and 11,130.99 is: 15,357.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.23 : 18,836.90 = 11,130.99 : x
  2. Step 2: Convert to fraction form
    13,653.23/18,836.90 = 11,130.99/x
  3. Step 3: Cross multiply
    13,653.23x = 18,836.90 × 11,130.99
  4. Step 4: Simplify right side
    13,653.23x = 209,673,373.36
  5. Step 5: Solve for x
    x = 209,673,373.36/13,653.23
  6. Step 6: Final answer
    x = 15,357.06

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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.