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Finding the Fourth Proportional to 15,572.66, 21,490.41 and 8,499.08

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Solution

The fourth proportional to 15,572.66, 21,490.41 and 8,499.08 is: 11,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.66 : 21,490.41 = 8,499.08 : x
  2. Step 2: Convert to fraction form
    15,572.66/21,490.41 = 8,499.08/x
  3. Step 3: Cross multiply
    15,572.66x = 21,490.41 × 8,499.08
  4. Step 4: Simplify right side
    15,572.66x = 182,648,606.37
  5. Step 5: Solve for x
    x = 182,648,606.37/15,572.66
  6. Step 6: Final answer
    x = 11,728.80

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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.