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Finding the Fourth Proportional to 12,483.36, 18,725.07 and 7,285.59

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Solution

The fourth proportional to 12,483.36, 18,725.07 and 7,285.59 is: 10,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.36 : 18,725.07 = 7,285.59 : x
  2. Step 2: Convert to fraction form
    12,483.36/18,725.07 = 7,285.59/x
  3. Step 3: Cross multiply
    12,483.36x = 18,725.07 × 7,285.59
  4. Step 4: Simplify right side
    12,483.36x = 136,423,182.74
  5. Step 5: Solve for x
    x = 136,423,182.74/12,483.36
  6. Step 6: Final answer
    x = 10,928.40

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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.