Home / 30,581.10-45,866.70-8,389.28

Finding the Fourth Proportional to 30,581.10, 45,866.70 and 8,389.28

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Solution

The fourth proportional to 30,581.10, 45,866.70 and 8,389.28 is: 12,582.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.10 : 45,866.70 = 8,389.28 : x
  2. Step 2: Convert to fraction form
    30,581.10/45,866.70 = 8,389.28/x
  3. Step 3: Cross multiply
    30,581.10x = 45,866.70 × 8,389.28
  4. Step 4: Simplify right side
    30,581.10x = 384,788,359.64
  5. Step 5: Solve for x
    x = 384,788,359.64/30,581.10
  6. Step 6: Final answer
    x = 12,582.55

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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.