Home / 15,430.46-21,293.94-8,356.88

Finding the Fourth Proportional to 15,430.46, 21,293.94 and 8,356.88

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Solution

The fourth proportional to 15,430.46, 21,293.94 and 8,356.88 is: 11,532.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.46 : 21,293.94 = 8,356.88 : x
  2. Step 2: Convert to fraction form
    15,430.46/21,293.94 = 8,356.88/x
  3. Step 3: Cross multiply
    15,430.46x = 21,293.94 × 8,356.88
  4. Step 4: Simplify right side
    15,430.46x = 177,950,901.31
  5. Step 5: Solve for x
    x = 177,950,901.31/15,430.46
  6. Step 6: Final answer
    x = 11,532.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.