Home / 13,877.15-20,826.65-5,118.21

Finding the Fourth Proportional to 13,877.15, 20,826.65 and 5,118.21

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Solution

The fourth proportional to 13,877.15, 20,826.65 and 5,118.21 is: 7,681.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.15 : 20,826.65 = 5,118.21 : x
  2. Step 2: Convert to fraction form
    13,877.15/20,826.65 = 5,118.21/x
  3. Step 3: Cross multiply
    13,877.15x = 20,826.65 × 5,118.21
  4. Step 4: Simplify right side
    13,877.15x = 106,595,142.71
  5. Step 5: Solve for x
    x = 106,595,142.71/13,877.15
  6. Step 6: Final answer
    x = 7,681.35

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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.