Home / 15,446.13-21,299.74-13,215.39

Finding the Fourth Proportional to 15,446.13, 21,299.74 and 13,215.39

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Solution

The fourth proportional to 15,446.13, 21,299.74 and 13,215.39 is: 18,223.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.13 : 21,299.74 = 13,215.39 : x
  2. Step 2: Convert to fraction form
    15,446.13/21,299.74 = 13,215.39/x
  3. Step 3: Cross multiply
    15,446.13x = 21,299.74 × 13,215.39
  4. Step 4: Simplify right side
    15,446.13x = 281,484,371.00
  5. Step 5: Solve for x
    x = 281,484,371.00/15,446.13
  6. Step 6: Final answer
    x = 18,223.62

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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.