Home / 11,862.80-16,368.36-8,320.40

Finding the Fourth Proportional to 11,862.80, 16,368.36 and 8,320.40

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Solution

The fourth proportional to 11,862.80, 16,368.36 and 8,320.40 is: 11,480.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.80 : 16,368.36 = 8,320.40 : x
  2. Step 2: Convert to fraction form
    11,862.80/16,368.36 = 8,320.40/x
  3. Step 3: Cross multiply
    11,862.80x = 16,368.36 × 8,320.40
  4. Step 4: Simplify right side
    11,862.80x = 136,191,302.54
  5. Step 5: Solve for x
    x = 136,191,302.54/11,862.80
  6. Step 6: Final answer
    x = 11,480.54

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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.