Home / 28,921.20-39,909.66-16,345.14

Finding the Fourth Proportional to 28,921.20, 39,909.66 and 16,345.14

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Solution

The fourth proportional to 28,921.20, 39,909.66 and 16,345.14 is: 22,555.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.20 : 39,909.66 = 16,345.14 : x
  2. Step 2: Convert to fraction form
    28,921.20/39,909.66 = 16,345.14/x
  3. Step 3: Cross multiply
    28,921.20x = 39,909.66 × 16,345.14
  4. Step 4: Simplify right side
    28,921.20x = 652,328,980.05
  5. Step 5: Solve for x
    x = 652,328,980.05/28,921.20
  6. Step 6: Final answer
    x = 22,555.39

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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.