Home / 15,490.50-21,376.98-8,416.94

Finding the Fourth Proportional to 15,490.50, 21,376.98 and 8,416.94

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Solution

The fourth proportional to 15,490.50, 21,376.98 and 8,416.94 is: 11,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.50 : 21,376.98 = 8,416.94 : x
  2. Step 2: Convert to fraction form
    15,490.50/21,376.98 = 8,416.94/x
  3. Step 3: Cross multiply
    15,490.50x = 21,376.98 × 8,416.94
  4. Step 4: Simplify right side
    15,490.50x = 179,928,758.04
  5. Step 5: Solve for x
    x = 179,928,758.04/15,490.50
  6. Step 6: Final answer
    x = 11,615.43

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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.