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Finding the Fourth Proportional to 30,359.98, 45,535.65 and 13,738.78

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Solution

The fourth proportional to 30,359.98, 45,535.65 and 13,738.78 is: 20,606.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,359.98 : 45,535.65 = 13,738.78 : x
  2. Step 2: Convert to fraction form
    30,359.98/45,535.65 = 13,738.78/x
  3. Step 3: Cross multiply
    30,359.98x = 45,535.65 × 13,738.78
  4. Step 4: Simplify right side
    30,359.98x = 625,604,277.51
  5. Step 5: Solve for x
    x = 625,604,277.51/30,359.98
  6. Step 6: Final answer
    x = 20,606.22

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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.