Home / 14,515.18-20,032.55-8,142.39

Finding the Fourth Proportional to 14,515.18, 20,032.55 and 8,142.39

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Solution

The fourth proportional to 14,515.18, 20,032.55 and 8,142.39 is: 11,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.18 : 20,032.55 = 8,142.39 : x
  2. Step 2: Convert to fraction form
    14,515.18/20,032.55 = 8,142.39/x
  3. Step 3: Cross multiply
    14,515.18x = 20,032.55 × 8,142.39
  4. Step 4: Simplify right side
    14,515.18x = 163,112,794.08
  5. Step 5: Solve for x
    x = 163,112,794.08/14,515.18
  6. Step 6: Final answer
    x = 11,237.40

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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.