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Finding the Fourth Proportional to 15,637, 21,579.03 and 8,563.48

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Solution

The fourth proportional to 15,637, 21,579.03 and 8,563.48 is: 11,817.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637 : 21,579.03 = 8,563.48 : x
  2. Step 2: Convert to fraction form
    15,637/21,579.03 = 8,563.48/x
  3. Step 3: Cross multiply
    15,637x = 21,579.03 × 8,563.48
  4. Step 4: Simplify right side
    15,637x = 184,791,591.82
  5. Step 5: Solve for x
    x = 184,791,591.82/15,637
  6. Step 6: Final answer
    x = 11,817.59

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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.