Home / 13,725.60-18,941.68-8,417.28

Finding the Fourth Proportional to 13,725.60, 18,941.68 and 8,417.28

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Solution

The fourth proportional to 13,725.60, 18,941.68 and 8,417.28 is: 11,616.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.60 : 18,941.68 = 8,417.28 : x
  2. Step 2: Convert to fraction form
    13,725.60/18,941.68 = 8,417.28/x
  3. Step 3: Cross multiply
    13,725.60x = 18,941.68 × 8,417.28
  4. Step 4: Simplify right side
    13,725.60x = 159,437,424.23
  5. Step 5: Solve for x
    x = 159,437,424.23/13,725.60
  6. Step 6: Final answer
    x = 11,616.06

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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.