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Finding the Fourth Proportional to 28,999.84, 43,502.42 and 9,009.45

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Solution

The fourth proportional to 28,999.84, 43,502.42 and 9,009.45 is: 13,515.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,999.84 : 43,502.42 = 9,009.45 : x
  2. Step 2: Convert to fraction form
    28,999.84/43,502.42 = 9,009.45/x
  3. Step 3: Cross multiply
    28,999.84x = 43,502.42 × 9,009.45
  4. Step 4: Simplify right side
    28,999.84x = 391,932,877.87
  5. Step 5: Solve for x
    x = 391,932,877.87/28,999.84
  6. Step 6: Final answer
    x = 13,515.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.