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Finding the Fourth Proportional to 30,400.79, 45,569.99 and 11,675.78

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Solution

The fourth proportional to 30,400.79, 45,569.99 and 11,675.78 is: 17,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,400.79 : 45,569.99 = 11,675.78 : x
  2. Step 2: Convert to fraction form
    30,400.79/45,569.99 = 11,675.78/x
  3. Step 3: Cross multiply
    30,400.79x = 45,569.99 × 11,675.78
  4. Step 4: Simplify right side
    30,400.79x = 532,065,119.46
  5. Step 5: Solve for x
    x = 532,065,119.46/30,400.79
  6. Step 6: Final answer
    x = 17,501.69

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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.