Home / 21,715.11-29,966.56-12,283.67

Finding the Fourth Proportional to 21,715.11, 29,966.56 and 12,283.67

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Solution

The fourth proportional to 21,715.11, 29,966.56 and 12,283.67 is: 16,951.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.11 : 29,966.56 = 12,283.67 : x
  2. Step 2: Convert to fraction form
    21,715.11/29,966.56 = 12,283.67/x
  3. Step 3: Cross multiply
    21,715.11x = 29,966.56 × 12,283.67
  4. Step 4: Simplify right side
    21,715.11x = 368,099,334.08
  5. Step 5: Solve for x
    x = 368,099,334.08/21,715.11
  6. Step 6: Final answer
    x = 16,951.30

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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.