Home / 19,210.40-28,815.55-5,359.40

Finding the Fourth Proportional to 19,210.40, 28,815.55 and 5,359.40

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Solution

The fourth proportional to 19,210.40, 28,815.55 and 5,359.40 is: 8,039.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.40 : 28,815.55 = 5,359.40 : x
  2. Step 2: Convert to fraction form
    19,210.40/28,815.55 = 5,359.40/x
  3. Step 3: Cross multiply
    19,210.40x = 28,815.55 × 5,359.40
  4. Step 4: Simplify right side
    19,210.40x = 154,434,058.67
  5. Step 5: Solve for x
    x = 154,434,058.67/19,210.40
  6. Step 6: Final answer
    x = 8,039.09

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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.