Home / 14,076.88-21,115.59-5,315.92

Finding the Fourth Proportional to 14,076.88, 21,115.59 and 5,315.92

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Solution

The fourth proportional to 14,076.88, 21,115.59 and 5,315.92 is: 7,973.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,076.88 : 21,115.59 = 5,315.92 : x
  2. Step 2: Convert to fraction form
    14,076.88/21,115.59 = 5,315.92/x
  3. Step 3: Cross multiply
    14,076.88x = 21,115.59 × 5,315.92
  4. Step 4: Simplify right side
    14,076.88x = 112,248,655.04
  5. Step 5: Solve for x
    x = 112,248,655.04/14,076.88
  6. Step 6: Final answer
    x = 7,973.98

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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.