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Finding the Fourth Proportional to 21,602.76, 29,813.54 and 12,045.75

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Solution

The fourth proportional to 21,602.76, 29,813.54 and 12,045.75 is: 16,624.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.76 : 29,813.54 = 12,045.75 : x
  2. Step 2: Convert to fraction form
    21,602.76/29,813.54 = 12,045.75/x
  3. Step 3: Cross multiply
    21,602.76x = 29,813.54 × 12,045.75
  4. Step 4: Simplify right side
    21,602.76x = 359,126,389.23
  5. Step 5: Solve for x
    x = 359,126,389.23/21,602.76
  6. Step 6: Final answer
    x = 16,624.10

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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.