Home / 12,866.50-19,159.16-12,393.60

Finding the Fourth Proportional to 12,866.50, 19,159.16 and 12,393.60

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Solution

The fourth proportional to 12,866.50, 19,159.16 and 12,393.60 is: 18,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.50 : 19,159.16 = 12,393.60 : x
  2. Step 2: Convert to fraction form
    12,866.50/19,159.16 = 12,393.60/x
  3. Step 3: Cross multiply
    12,866.50x = 19,159.16 × 12,393.60
  4. Step 4: Simplify right side
    12,866.50x = 237,450,965.38
  5. Step 5: Solve for x
    x = 237,450,965.38/12,866.50
  6. Step 6: Final answer
    x = 18,454.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.