Home / 20,315.93-28,037.40-11,364.26

Finding the Fourth Proportional to 20,315.93, 28,037.40 and 11,364.26

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Solution

The fourth proportional to 20,315.93, 28,037.40 and 11,364.26 is: 15,683.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.93 : 28,037.40 = 11,364.26 : x
  2. Step 2: Convert to fraction form
    20,315.93/28,037.40 = 11,364.26/x
  3. Step 3: Cross multiply
    20,315.93x = 28,037.40 × 11,364.26
  4. Step 4: Simplify right side
    20,315.93x = 318,624,163.14
  5. Step 5: Solve for x
    x = 318,624,163.14/20,315.93
  6. Step 6: Final answer
    x = 15,683.47

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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.