Home / 15,446.49-21,315.59-8,372.76

Finding the Fourth Proportional to 15,446.49, 21,315.59 and 8,372.76

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Solution

The fourth proportional to 15,446.49, 21,315.59 and 8,372.76 is: 11,554.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.49 : 21,315.59 = 8,372.76 : x
  2. Step 2: Convert to fraction form
    15,446.49/21,315.59 = 8,372.76/x
  3. Step 3: Cross multiply
    15,446.49x = 21,315.59 × 8,372.76
  4. Step 4: Simplify right side
    15,446.49x = 178,470,277.46
  5. Step 5: Solve for x
    x = 178,470,277.46/15,446.49
  6. Step 6: Final answer
    x = 11,554.10

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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.