Home / 20,432.58-28,209.87-13,370.94

Finding the Fourth Proportional to 20,432.58, 28,209.87 and 13,370.94

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Solution

The fourth proportional to 20,432.58, 28,209.87 and 13,370.94 is: 18,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.58 : 28,209.87 = 13,370.94 : x
  2. Step 2: Convert to fraction form
    20,432.58/28,209.87 = 13,370.94/x
  3. Step 3: Cross multiply
    20,432.58x = 28,209.87 × 13,370.94
  4. Step 4: Simplify right side
    20,432.58x = 377,192,479.18
  5. Step 5: Solve for x
    x = 377,192,479.18/20,432.58
  6. Step 6: Final answer
    x = 18,460.35

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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.