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Finding the Fourth Proportional to 19,210.05, 28,815.03 and 5,359.05

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Solution

The fourth proportional to 19,210.05, 28,815.03 and 5,359.05 is: 8,038.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.05 : 28,815.03 = 5,359.05 : x
  2. Step 2: Convert to fraction form
    19,210.05/28,815.03 = 5,359.05/x
  3. Step 3: Cross multiply
    19,210.05x = 28,815.03 × 5,359.05
  4. Step 4: Simplify right side
    19,210.05x = 154,421,186.52
  5. Step 5: Solve for x
    x = 154,421,186.52/19,210.05
  6. Step 6: Final answer
    x = 8,038.56

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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.