Home / 28,924.71-39,908.79-16,985.72

Finding the Fourth Proportional to 28,924.71, 39,908.79 and 16,985.72

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Solution

The fourth proportional to 28,924.71, 39,908.79 and 16,985.72 is: 23,435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,924.71 : 39,908.79 = 16,985.72 : x
  2. Step 2: Convert to fraction form
    28,924.71/39,908.79 = 16,985.72/x
  3. Step 3: Cross multiply
    28,924.71x = 39,908.79 × 16,985.72
  4. Step 4: Simplify right side
    28,924.71x = 677,879,332.93
  5. Step 5: Solve for x
    x = 677,879,332.93/28,924.71
  6. Step 6: Final answer
    x = 23,435.99

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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.