Home / 20,908.62-28,848.29-12,403.65

Finding the Fourth Proportional to 20,908.62, 28,848.29 and 12,403.65

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Solution

The fourth proportional to 20,908.62, 28,848.29 and 12,403.65 is: 17,113.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.62 : 28,848.29 = 12,403.65 : x
  2. Step 2: Convert to fraction form
    20,908.62/28,848.29 = 12,403.65/x
  3. Step 3: Cross multiply
    20,908.62x = 28,848.29 × 12,403.65
  4. Step 4: Simplify right side
    20,908.62x = 357,824,030.24
  5. Step 5: Solve for x
    x = 357,824,030.24/20,908.62
  6. Step 6: Final answer
    x = 17,113.71

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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.