Home / 30,279.50-45,420.92-11,561.05

Finding the Fourth Proportional to 30,279.50, 45,420.92 and 11,561.05

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Solution

The fourth proportional to 30,279.50, 45,420.92 and 11,561.05 is: 17,342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.50 : 45,420.92 = 11,561.05 : x
  2. Step 2: Convert to fraction form
    30,279.50/45,420.92 = 11,561.05/x
  3. Step 3: Cross multiply
    30,279.50x = 45,420.92 × 11,561.05
  4. Step 4: Simplify right side
    30,279.50x = 525,113,527.17
  5. Step 5: Solve for x
    x = 525,113,527.17/30,279.50
  6. Step 6: Final answer
    x = 17,342.21

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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.