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Finding the Fourth Proportional to 21,246, 29,318.52 and 12,753.15

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Solution

The fourth proportional to 21,246, 29,318.52 and 12,753.15 is: 17,598.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246 : 29,318.52 = 12,753.15 : x
  2. Step 2: Convert to fraction form
    21,246/29,318.52 = 12,753.15/x
  3. Step 3: Cross multiply
    21,246x = 29,318.52 × 12,753.15
  4. Step 4: Simplify right side
    21,246x = 373,903,483.34
  5. Step 5: Solve for x
    x = 373,903,483.34/21,246
  6. Step 6: Final answer
    x = 17,598.77

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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.