Home / 21,518.07-29,697.48-12,086.61

Finding the Fourth Proportional to 21,518.07, 29,697.48 and 12,086.61

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Solution

The fourth proportional to 21,518.07, 29,697.48 and 12,086.61 is: 16,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.07 : 29,697.48 = 12,086.61 : x
  2. Step 2: Convert to fraction form
    21,518.07/29,697.48 = 12,086.61/x
  3. Step 3: Cross multiply
    21,518.07x = 29,697.48 × 12,086.61
  4. Step 4: Simplify right side
    21,518.07x = 358,941,858.74
  5. Step 5: Solve for x
    x = 358,941,858.74/21,518.07
  6. Step 6: Final answer
    x = 16,680.95

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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.