Home / 17,920.50-26,880.68-4,772.88

Finding the Fourth Proportional to 17,920.50, 26,880.68 and 4,772.88

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Solution

The fourth proportional to 17,920.50, 26,880.68 and 4,772.88 is: 7,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.50 : 26,880.68 = 4,772.88 : x
  2. Step 2: Convert to fraction form
    17,920.50/26,880.68 = 4,772.88/x
  3. Step 3: Cross multiply
    17,920.50x = 26,880.68 × 4,772.88
  4. Step 4: Simplify right side
    17,920.50x = 128,298,259.96
  5. Step 5: Solve for x
    x = 128,298,259.96/17,920.50
  6. Step 6: Final answer
    x = 7,159.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.