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Finding the Fourth Proportional to 30,475.76, 45,713.63 and 12,933.28

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Solution

The fourth proportional to 30,475.76, 45,713.63 and 12,933.28 is: 19,399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,475.76 : 45,713.63 = 12,933.28 : x
  2. Step 2: Convert to fraction form
    30,475.76/45,713.63 = 12,933.28/x
  3. Step 3: Cross multiply
    30,475.76x = 45,713.63 × 12,933.28
  4. Step 4: Simplify right side
    30,475.76x = 591,227,266.08
  5. Step 5: Solve for x
    x = 591,227,266.08/30,475.76
  6. Step 6: Final answer
    x = 19,399.92

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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.