Home / 13,639.80-18,842.04-10,535.88

Finding the Fourth Proportional to 13,639.80, 18,842.04 and 10,535.88

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Solution

The fourth proportional to 13,639.80, 18,842.04 and 10,535.88 is: 14,554.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.80 : 18,842.04 = 10,535.88 : x
  2. Step 2: Convert to fraction form
    13,639.80/18,842.04 = 10,535.88/x
  3. Step 3: Cross multiply
    13,639.80x = 18,842.04 × 10,535.88
  4. Step 4: Simplify right side
    13,639.80x = 198,517,472.40
  5. Step 5: Solve for x
    x = 198,517,472.40/13,639.80
  6. Step 6: Final answer
    x = 14,554.28

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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.