Home / 28,909.08-39,894.84-16,972.56

Finding the Fourth Proportional to 28,909.08, 39,894.84 and 16,972.56

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Solution

The fourth proportional to 28,909.08, 39,894.84 and 16,972.56 is: 23,422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.08 : 39,894.84 = 16,972.56 : x
  2. Step 2: Convert to fraction form
    28,909.08/39,894.84 = 16,972.56/x
  3. Step 3: Cross multiply
    28,909.08x = 39,894.84 × 16,972.56
  4. Step 4: Simplify right side
    28,909.08x = 677,117,565.59
  5. Step 5: Solve for x
    x = 677,117,565.59/28,909.08
  6. Step 6: Final answer
    x = 23,422.31

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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.