Home / 13,873.08-19,139.48-8,836.40

Finding the Fourth Proportional to 13,873.08, 19,139.48 and 8,836.40

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Solution

The fourth proportional to 13,873.08, 19,139.48 and 8,836.40 is: 12,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.08 : 19,139.48 = 8,836.40 : x
  2. Step 2: Convert to fraction form
    13,873.08/19,139.48 = 8,836.40/x
  3. Step 3: Cross multiply
    13,873.08x = 19,139.48 × 8,836.40
  4. Step 4: Simplify right side
    13,873.08x = 169,124,101.07
  5. Step 5: Solve for x
    x = 169,124,101.07/13,873.08
  6. Step 6: Final answer
    x = 12,190.81

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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.