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Finding the Fourth Proportional to 28,933.61, 43,407.09 and 9,212.13

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Solution

The fourth proportional to 28,933.61, 43,407.09 and 9,212.13 is: 13,820.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,933.61 : 43,407.09 = 9,212.13 : x
  2. Step 2: Convert to fraction form
    28,933.61/43,407.09 = 9,212.13/x
  3. Step 3: Cross multiply
    28,933.61x = 43,407.09 × 9,212.13
  4. Step 4: Simplify right side
    28,933.61x = 399,871,756.00
  5. Step 5: Solve for x
    x = 399,871,756.00/28,933.61
  6. Step 6: Final answer
    x = 13,820.32

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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.