Home / 13,557.11-18,699.23-11,665.45

Finding the Fourth Proportional to 13,557.11, 18,699.23 and 11,665.45

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Solution

The fourth proportional to 13,557.11, 18,699.23 and 11,665.45 is: 16,090.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.11 : 18,699.23 = 11,665.45 : x
  2. Step 2: Convert to fraction form
    13,557.11/18,699.23 = 11,665.45/x
  3. Step 3: Cross multiply
    13,557.11x = 18,699.23 × 11,665.45
  4. Step 4: Simplify right side
    13,557.11x = 218,134,894.30
  5. Step 5: Solve for x
    x = 218,134,894.30/13,557.11
  6. Step 6: Final answer
    x = 16,090.07

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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.