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Finding the Fourth Proportional to 30,614.40, 45,928.80 and 9,838.08

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Solution

The fourth proportional to 30,614.40, 45,928.80 and 9,838.08 is: 14,759.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,614.40 : 45,928.80 = 9,838.08 : x
  2. Step 2: Convert to fraction form
    30,614.40/45,928.80 = 9,838.08/x
  3. Step 3: Cross multiply
    30,614.40x = 45,928.80 × 9,838.08
  4. Step 4: Simplify right side
    30,614.40x = 451,851,208.70
  5. Step 5: Solve for x
    x = 451,851,208.70/30,614.40
  6. Step 6: Final answer
    x = 14,759.43

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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.