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Finding the Fourth Proportional to 15,710.01, 21,679.82 and 8,997.87

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Solution

The fourth proportional to 15,710.01, 21,679.82 and 8,997.87 is: 12,417.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710.01 : 21,679.82 = 8,997.87 : x
  2. Step 2: Convert to fraction form
    15,710.01/21,679.82 = 8,997.87/x
  3. Step 3: Cross multiply
    15,710.01x = 21,679.82 × 8,997.87
  4. Step 4: Simplify right side
    15,710.01x = 195,072,156.99
  5. Step 5: Solve for x
    x = 195,072,156.99/15,710.01
  6. Step 6: Final answer
    x = 12,417.06

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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.