Home / 21,977.12-30,326.63-12,417.84

Finding the Fourth Proportional to 21,977.12, 30,326.63 and 12,417.84

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Solution

The fourth proportional to 21,977.12, 30,326.63 and 12,417.84 is: 17,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.12 : 30,326.63 = 12,417.84 : x
  2. Step 2: Convert to fraction form
    21,977.12/30,326.63 = 12,417.84/x
  3. Step 3: Cross multiply
    21,977.12x = 30,326.63 × 12,417.84
  4. Step 4: Simplify right side
    21,977.12x = 376,591,176.99
  5. Step 5: Solve for x
    x = 376,591,176.99/21,977.12
  6. Step 6: Final answer
    x = 17,135.60

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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.