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Finding the Fourth Proportional to 11,521, 15,898.98 and 6,553

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Solution

The fourth proportional to 11,521, 15,898.98 and 6,553 is: 9,043.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,521 : 15,898.98 = 6,553 : x
  2. Step 2: Convert to fraction form
    11,521/15,898.98 = 6,553/x
  3. Step 3: Cross multiply
    11,521x = 15,898.98 × 6,553
  4. Step 4: Simplify right side
    11,521x = 104,186,015.94
  5. Step 5: Solve for x
    x = 104,186,015.94/11,521
  6. Step 6: Final answer
    x = 9,043.14

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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.