Home / 20,904.98-28,846.95-12,405.63

Finding the Fourth Proportional to 20,904.98, 28,846.95 and 12,405.63

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Solution

The fourth proportional to 20,904.98, 28,846.95 and 12,405.63 is: 17,118.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.98 : 28,846.95 = 12,405.63 : x
  2. Step 2: Convert to fraction form
    20,904.98/28,846.95 = 12,405.63/x
  3. Step 3: Cross multiply
    20,904.98x = 28,846.95 × 12,405.63
  4. Step 4: Simplify right side
    20,904.98x = 357,864,588.33
  5. Step 5: Solve for x
    x = 357,864,588.33/20,904.98
  6. Step 6: Final answer
    x = 17,118.63

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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.