Home / 13,903.52-20,855.40-3,515.28

Finding the Fourth Proportional to 13,903.52, 20,855.40 and 3,515.28

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Solution

The fourth proportional to 13,903.52, 20,855.40 and 3,515.28 is: 5,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.52 : 20,855.40 = 3,515.28 : x
  2. Step 2: Convert to fraction form
    13,903.52/20,855.40 = 3,515.28/x
  3. Step 3: Cross multiply
    13,903.52x = 20,855.40 × 3,515.28
  4. Step 4: Simplify right side
    13,903.52x = 73,312,570.51
  5. Step 5: Solve for x
    x = 73,312,570.51/13,903.52
  6. Step 6: Final answer
    x = 5,272.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.