Home / 20,697.57-28,528.49-14,639.99

Finding the Fourth Proportional to 20,697.57, 28,528.49 and 14,639.99

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Solution

The fourth proportional to 20,697.57, 28,528.49 and 14,639.99 is: 20,179.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.57 : 28,528.49 = 14,639.99 : x
  2. Step 2: Convert to fraction form
    20,697.57/28,528.49 = 14,639.99/x
  3. Step 3: Cross multiply
    20,697.57x = 28,528.49 × 14,639.99
  4. Step 4: Simplify right side
    20,697.57x = 417,656,592.47
  5. Step 5: Solve for x
    x = 417,656,592.47/20,697.57
  6. Step 6: Final answer
    x = 20,179.02

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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.