Home / 10,854.88-16,271.12-4,278.40

Finding the Fourth Proportional to 10,854.88, 16,271.12 and 4,278.40

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Solution

The fourth proportional to 10,854.88, 16,271.12 and 4,278.40 is: 6,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,854.88 : 16,271.12 = 4,278.40 : x
  2. Step 2: Convert to fraction form
    10,854.88/16,271.12 = 4,278.40/x
  3. Step 3: Cross multiply
    10,854.88x = 16,271.12 × 4,278.40
  4. Step 4: Simplify right side
    10,854.88x = 69,614,359.81
  5. Step 5: Solve for x
    x = 69,614,359.81/10,854.88
  6. Step 6: Final answer
    x = 6,413.19

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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.