Home / 19,871.42-27,434.58-13,162.76

Finding the Fourth Proportional to 19,871.42, 27,434.58 and 13,162.76

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Solution

The fourth proportional to 19,871.42, 27,434.58 and 13,162.76 is: 18,172.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.42 : 27,434.58 = 13,162.76 : x
  2. Step 2: Convert to fraction form
    19,871.42/27,434.58 = 13,162.76/x
  3. Step 3: Cross multiply
    19,871.42x = 27,434.58 × 13,162.76
  4. Step 4: Simplify right side
    19,871.42x = 361,114,792.24
  5. Step 5: Solve for x
    x = 361,114,792.24/19,871.42
  6. Step 6: Final answer
    x = 18,172.57

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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.