Home / 13,519.64-18,669.92-12,783.34

Finding the Fourth Proportional to 13,519.64, 18,669.92 and 12,783.34

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Solution

The fourth proportional to 13,519.64, 18,669.92 and 12,783.34 is: 17,653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.64 : 18,669.92 = 12,783.34 : x
  2. Step 2: Convert to fraction form
    13,519.64/18,669.92 = 12,783.34/x
  3. Step 3: Cross multiply
    13,519.64x = 18,669.92 × 12,783.34
  4. Step 4: Simplify right side
    13,519.64x = 238,663,935.13
  5. Step 5: Solve for x
    x = 238,663,935.13/13,519.64
  6. Step 6: Final answer
    x = 17,653.13

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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.