Home / 10,792.20-16,190.70-8,459.40

Finding the Fourth Proportional to 10,792.20, 16,190.70 and 8,459.40

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Solution

The fourth proportional to 10,792.20, 16,190.70 and 8,459.40 is: 12,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,792.20 : 16,190.70 = 8,459.40 : x
  2. Step 2: Convert to fraction form
    10,792.20/16,190.70 = 8,459.40/x
  3. Step 3: Cross multiply
    10,792.20x = 16,190.70 × 8,459.40
  4. Step 4: Simplify right side
    10,792.20x = 136,963,607.58
  5. Step 5: Solve for x
    x = 136,963,607.58/10,792.20
  6. Step 6: Final answer
    x = 12,690.98

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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.