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Finding the Fourth Proportional to 30,561.76, 45,849.80 and 9,500.72

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Solution

The fourth proportional to 30,561.76, 45,849.80 and 9,500.72 is: 14,253.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561.76 : 45,849.80 = 9,500.72 : x
  2. Step 2: Convert to fraction form
    30,561.76/45,849.80 = 9,500.72/x
  3. Step 3: Cross multiply
    30,561.76x = 45,849.80 × 9,500.72
  4. Step 4: Simplify right side
    30,561.76x = 435,606,111.86
  5. Step 5: Solve for x
    x = 435,606,111.86/30,561.76
  6. Step 6: Final answer
    x = 14,253.31

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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.