Home / 12,357.12-18,533.76-3,590.28

Finding the Fourth Proportional to 12,357.12, 18,533.76 and 3,590.28

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Solution

The fourth proportional to 12,357.12, 18,533.76 and 3,590.28 is: 5,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.12 : 18,533.76 = 3,590.28 : x
  2. Step 2: Convert to fraction form
    12,357.12/18,533.76 = 3,590.28/x
  3. Step 3: Cross multiply
    12,357.12x = 18,533.76 × 3,590.28
  4. Step 4: Simplify right side
    12,357.12x = 66,541,387.85
  5. Step 5: Solve for x
    x = 66,541,387.85/12,357.12
  6. Step 6: Final answer
    x = 5,384.86

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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.