Home / 13,688.28-18,900.50-10,712.58

Finding the Fourth Proportional to 13,688.28, 18,900.50 and 10,712.58

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Solution

The fourth proportional to 13,688.28, 18,900.50 and 10,712.58 is: 14,791.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.28 : 18,900.50 = 10,712.58 : x
  2. Step 2: Convert to fraction form
    13,688.28/18,900.50 = 10,712.58/x
  3. Step 3: Cross multiply
    13,688.28x = 18,900.50 × 10,712.58
  4. Step 4: Simplify right side
    13,688.28x = 202,473,118.29
  5. Step 5: Solve for x
    x = 202,473,118.29/13,688.28
  6. Step 6: Final answer
    x = 14,791.71

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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.