Home / 19,210.50-28,815.75-5,359.50

Finding the Fourth Proportional to 19,210.50, 28,815.75 and 5,359.50

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Solution

The fourth proportional to 19,210.50, 28,815.75 and 5,359.50 is: 8,039.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.50 : 28,815.75 = 5,359.50 : x
  2. Step 2: Convert to fraction form
    19,210.50/28,815.75 = 5,359.50/x
  3. Step 3: Cross multiply
    19,210.50x = 28,815.75 × 5,359.50
  4. Step 4: Simplify right side
    19,210.50x = 154,438,012.13
  5. Step 5: Solve for x
    x = 154,438,012.13/19,210.50
  6. Step 6: Final answer
    x = 8,039.25

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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.