Home / 28,931.58-39,908.97-16,992.72

Finding the Fourth Proportional to 28,931.58, 39,908.97 and 16,992.72

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Solution

The fourth proportional to 28,931.58, 39,908.97 and 16,992.72 is: 23,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.58 : 39,908.97 = 16,992.72 : x
  2. Step 2: Convert to fraction form
    28,931.58/39,908.97 = 16,992.72/x
  3. Step 3: Cross multiply
    28,931.58x = 39,908.97 × 16,992.72
  4. Step 4: Simplify right side
    28,931.58x = 678,161,952.70
  5. Step 5: Solve for x
    x = 678,161,952.70/28,931.58
  6. Step 6: Final answer
    x = 23,440.20

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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.