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Finding the Fourth Proportional to 30,341.81, 45,479.84 and 15,530.42

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Solution

The fourth proportional to 30,341.81, 45,479.84 and 15,530.42 is: 23,278.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,341.81 : 45,479.84 = 15,530.42 : x
  2. Step 2: Convert to fraction form
    30,341.81/45,479.84 = 15,530.42/x
  3. Step 3: Cross multiply
    30,341.81x = 45,479.84 × 15,530.42
  4. Step 4: Simplify right side
    30,341.81x = 706,320,711.68
  5. Step 5: Solve for x
    x = 706,320,711.68/30,341.81
  6. Step 6: Final answer
    x = 23,278.80

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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.