Home / 20,503.10-28,294.34-11,890.95

Finding the Fourth Proportional to 20,503.10, 28,294.34 and 11,890.95

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Solution

The fourth proportional to 20,503.10, 28,294.34 and 11,890.95 is: 16,409.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.10 : 28,294.34 = 11,890.95 : x
  2. Step 2: Convert to fraction form
    20,503.10/28,294.34 = 11,890.95/x
  3. Step 3: Cross multiply
    20,503.10x = 28,294.34 × 11,890.95
  4. Step 4: Simplify right side
    20,503.10x = 336,446,522.77
  5. Step 5: Solve for x
    x = 336,446,522.77/20,503.10
  6. Step 6: Final answer
    x = 16,409.55

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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.