Home / 20,730.09-31,075.55-8,257.82

Finding the Fourth Proportional to 20,730.09, 31,075.55 and 8,257.82

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Solution

The fourth proportional to 20,730.09, 31,075.55 and 8,257.82 is: 12,378.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.09 : 31,075.55 = 8,257.82 : x
  2. Step 2: Convert to fraction form
    20,730.09/31,075.55 = 8,257.82/x
  3. Step 3: Cross multiply
    20,730.09x = 31,075.55 × 8,257.82
  4. Step 4: Simplify right side
    20,730.09x = 256,616,101.63
  5. Step 5: Solve for x
    x = 256,616,101.63/20,730.09
  6. Step 6: Final answer
    x = 12,378.92

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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.