Home / 20,880.07-28,815.21-14,925.96

Finding the Fourth Proportional to 20,880.07, 28,815.21 and 14,925.96

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Solution

The fourth proportional to 20,880.07, 28,815.21 and 14,925.96 is: 20,598.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.07 : 28,815.21 = 14,925.96 : x
  2. Step 2: Convert to fraction form
    20,880.07/28,815.21 = 14,925.96/x
  3. Step 3: Cross multiply
    20,880.07x = 28,815.21 × 14,925.96
  4. Step 4: Simplify right side
    20,880.07x = 430,094,671.85
  5. Step 5: Solve for x
    x = 430,094,671.85/20,880.07
  6. Step 6: Final answer
    x = 20,598.33

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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.