Home / 28,345.52-39,118.20-16,406.72

Finding the Fourth Proportional to 28,345.52, 39,118.20 and 16,406.72

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Solution

The fourth proportional to 28,345.52, 39,118.20 and 16,406.72 is: 22,642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.52 : 39,118.20 = 16,406.72 : x
  2. Step 2: Convert to fraction form
    28,345.52/39,118.20 = 16,406.72/x
  3. Step 3: Cross multiply
    28,345.52x = 39,118.20 × 16,406.72
  4. Step 4: Simplify right side
    28,345.52x = 641,801,354.30
  5. Step 5: Solve for x
    x = 641,801,354.30/28,345.52
  6. Step 6: Final answer
    x = 22,642.07

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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.