Home / 15,496.36-21,384.90-8,422.76

Finding the Fourth Proportional to 15,496.36, 21,384.90 and 8,422.76

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Solution

The fourth proportional to 15,496.36, 21,384.90 and 8,422.76 is: 11,623.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.36 : 21,384.90 = 8,422.76 : x
  2. Step 2: Convert to fraction form
    15,496.36/21,384.90 = 8,422.76/x
  3. Step 3: Cross multiply
    15,496.36x = 21,384.90 × 8,422.76
  4. Step 4: Simplify right side
    15,496.36x = 180,119,880.32
  5. Step 5: Solve for x
    x = 180,119,880.32/15,496.36
  6. Step 6: Final answer
    x = 11,623.37

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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.