Home / 13,670.85-18,826.05-11,877.51

Finding the Fourth Proportional to 13,670.85, 18,826.05 and 11,877.51

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Solution

The fourth proportional to 13,670.85, 18,826.05 and 11,877.51 is: 16,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.85 : 18,826.05 = 11,877.51 : x
  2. Step 2: Convert to fraction form
    13,670.85/18,826.05 = 11,877.51/x
  3. Step 3: Cross multiply
    13,670.85x = 18,826.05 × 11,877.51
  4. Step 4: Simplify right side
    13,670.85x = 223,606,597.14
  5. Step 5: Solve for x
    x = 223,606,597.14/13,670.85
  6. Step 6: Final answer
    x = 16,356.45

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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.