Home / 30,189.40-45,211.14-15,359.32

Finding the Fourth Proportional to 30,189.40, 45,211.14 and 15,359.32

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Solution

The fourth proportional to 30,189.40, 45,211.14 and 15,359.32 is: 23,001.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,189.40 : 45,211.14 = 15,359.32 : x
  2. Step 2: Convert to fraction form
    30,189.40/45,211.14 = 15,359.32/x
  3. Step 3: Cross multiply
    30,189.40x = 45,211.14 × 15,359.32
  4. Step 4: Simplify right side
    30,189.40x = 694,412,366.82
  5. Step 5: Solve for x
    x = 694,412,366.82/30,189.40
  6. Step 6: Final answer
    x = 23,001.86

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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.