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Finding the Fourth Proportional to 29,108.56, 40,169.76 and 15,860.56

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Solution

The fourth proportional to 29,108.56, 40,169.76 and 15,860.56 is: 21,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,108.56 : 40,169.76 = 15,860.56 : x
  2. Step 2: Convert to fraction form
    29,108.56/40,169.76 = 15,860.56/x
  3. Step 3: Cross multiply
    29,108.56x = 40,169.76 × 15,860.56
  4. Step 4: Simplify right side
    29,108.56x = 637,114,888.67
  5. Step 5: Solve for x
    x = 637,114,888.67/29,108.56
  6. Step 6: Final answer
    x = 21,887.54

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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.