Home / 12,840.85-19,264.94-7,580.66

Finding the Fourth Proportional to 12,840.85, 19,264.94 and 7,580.66

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Solution

The fourth proportional to 12,840.85, 19,264.94 and 7,580.66 is: 11,373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.85 : 19,264.94 = 7,580.66 : x
  2. Step 2: Convert to fraction form
    12,840.85/19,264.94 = 7,580.66/x
  3. Step 3: Cross multiply
    12,840.85x = 19,264.94 × 7,580.66
  4. Step 4: Simplify right side
    12,840.85x = 146,040,854.26
  5. Step 5: Solve for x
    x = 146,040,854.26/12,840.85
  6. Step 6: Final answer
    x = 11,373.15

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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.