Home / 13,639.46-18,824.27-7,672.28

Finding the Fourth Proportional to 13,639.46, 18,824.27 and 7,672.28

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Solution

The fourth proportional to 13,639.46, 18,824.27 and 7,672.28 is: 10,588.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.46 : 18,824.27 = 7,672.28 : x
  2. Step 2: Convert to fraction form
    13,639.46/18,824.27 = 7,672.28/x
  3. Step 3: Cross multiply
    13,639.46x = 18,824.27 × 7,672.28
  4. Step 4: Simplify right side
    13,639.46x = 144,425,070.24
  5. Step 5: Solve for x
    x = 144,425,070.24/13,639.46
  6. Step 6: Final answer
    x = 10,588.77

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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.