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Finding the Fourth Proportional to 30,633.60, 45,928.79 and 11,898.03

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Solution

The fourth proportional to 30,633.60, 45,928.79 and 11,898.03 is: 17,838.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,633.60 : 45,928.79 = 11,898.03 : x
  2. Step 2: Convert to fraction form
    30,633.60/45,928.79 = 11,898.03/x
  3. Step 3: Cross multiply
    30,633.60x = 45,928.79 × 11,898.03
  4. Step 4: Simplify right side
    30,633.60x = 546,461,921.38
  5. Step 5: Solve for x
    x = 546,461,921.38/30,633.60
  6. Step 6: Final answer
    x = 17,838.65

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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.