Home / 13,605.15-20,407.86-4,117.55

Finding the Fourth Proportional to 13,605.15, 20,407.86 and 4,117.55

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Solution

The fourth proportional to 13,605.15, 20,407.86 and 4,117.55 is: 6,176.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.15 : 20,407.86 = 4,117.55 : x
  2. Step 2: Convert to fraction form
    13,605.15/20,407.86 = 4,117.55/x
  3. Step 3: Cross multiply
    13,605.15x = 20,407.86 × 4,117.55
  4. Step 4: Simplify right side
    13,605.15x = 84,030,281.90
  5. Step 5: Solve for x
    x = 84,030,281.90/13,605.15
  6. Step 6: Final answer
    x = 6,176.36

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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.