Home / 21,618.02-29,833.70-12,186.38

Finding the Fourth Proportional to 21,618.02, 29,833.70 and 12,186.38

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Solution

The fourth proportional to 21,618.02, 29,833.70 and 12,186.38 is: 16,817.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.02 : 29,833.70 = 12,186.38 : x
  2. Step 2: Convert to fraction form
    21,618.02/29,833.70 = 12,186.38/x
  3. Step 3: Cross multiply
    21,618.02x = 29,833.70 × 12,186.38
  4. Step 4: Simplify right side
    21,618.02x = 363,564,594.91
  5. Step 5: Solve for x
    x = 363,564,594.91/21,618.02
  6. Step 6: Final answer
    x = 16,817.67

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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.