Home / 20,455.24-28,211.32-14,425.56

Finding the Fourth Proportional to 20,455.24, 28,211.32 and 14,425.56

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Solution

The fourth proportional to 20,455.24, 28,211.32 and 14,425.56 is: 19,895.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.24 : 28,211.32 = 14,425.56 : x
  2. Step 2: Convert to fraction form
    20,455.24/28,211.32 = 14,425.56/x
  3. Step 3: Cross multiply
    20,455.24x = 28,211.32 × 14,425.56
  4. Step 4: Simplify right side
    20,455.24x = 406,964,089.34
  5. Step 5: Solve for x
    x = 406,964,089.34/20,455.24
  6. Step 6: Final answer
    x = 19,895.35

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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.