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Finding the Fourth Proportional to 30,370.40, 45,544.80 and 13,738.40

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Solution

The fourth proportional to 30,370.40, 45,544.80 and 13,738.40 is: 20,602.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,370.40 : 45,544.80 = 13,738.40 : x
  2. Step 2: Convert to fraction form
    30,370.40/45,544.80 = 13,738.40/x
  3. Step 3: Cross multiply
    30,370.40x = 45,544.80 × 13,738.40
  4. Step 4: Simplify right side
    30,370.40x = 625,712,680.32
  5. Step 5: Solve for x
    x = 625,712,680.32/30,370.40
  6. Step 6: Final answer
    x = 20,602.71

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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.