Home / 19,518.12-29,275.58-5,478.36

Finding the Fourth Proportional to 19,518.12, 29,275.58 and 5,478.36

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Solution

The fourth proportional to 19,518.12, 29,275.58 and 5,478.36 is: 8,217.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518.12 : 29,275.58 = 5,478.36 : x
  2. Step 2: Convert to fraction form
    19,518.12/29,275.58 = 5,478.36/x
  3. Step 3: Cross multiply
    19,518.12x = 29,275.58 × 5,478.36
  4. Step 4: Simplify right side
    19,518.12x = 160,382,166.45
  5. Step 5: Solve for x
    x = 160,382,166.45/19,518.12
  6. Step 6: Final answer
    x = 8,217.09

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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.