Home / 13,515.40-20,268.30-6,123.40

Finding the Fourth Proportional to 13,515.40, 20,268.30 and 6,123.40

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Solution

The fourth proportional to 13,515.40, 20,268.30 and 6,123.40 is: 9,182.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.40 : 20,268.30 = 6,123.40 : x
  2. Step 2: Convert to fraction form
    13,515.40/20,268.30 = 6,123.40/x
  3. Step 3: Cross multiply
    13,515.40x = 20,268.30 × 6,123.40
  4. Step 4: Simplify right side
    13,515.40x = 124,110,908.22
  5. Step 5: Solve for x
    x = 124,110,908.22/13,515.40
  6. Step 6: Final answer
    x = 9,182.93

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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.