Home / 28,784.86-39,723.19-16,687.70

Finding the Fourth Proportional to 28,784.86, 39,723.19 and 16,687.70

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Solution

The fourth proportional to 28,784.86, 39,723.19 and 16,687.70 is: 23,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784.86 : 39,723.19 = 16,687.70 : x
  2. Step 2: Convert to fraction form
    28,784.86/39,723.19 = 16,687.70/x
  3. Step 3: Cross multiply
    28,784.86x = 39,723.19 × 16,687.70
  4. Step 4: Simplify right side
    28,784.86x = 662,888,677.76
  5. Step 5: Solve for x
    x = 662,888,677.76/28,784.86
  6. Step 6: Final answer
    x = 23,029.07

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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.