Home / 30,319.89-45,484.70-12,792.30

Finding the Fourth Proportional to 30,319.89, 45,484.70 and 12,792.30

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Solution

The fourth proportional to 30,319.89, 45,484.70 and 12,792.30 is: 19,190.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,319.89 : 45,484.70 = 12,792.30 : x
  2. Step 2: Convert to fraction form
    30,319.89/45,484.70 = 12,792.30/x
  3. Step 3: Cross multiply
    30,319.89x = 45,484.70 × 12,792.30
  4. Step 4: Simplify right side
    30,319.89x = 581,853,863.85
  5. Step 5: Solve for x
    x = 581,853,863.85/30,319.89
  6. Step 6: Final answer
    x = 19,190.50

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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.