Home / 11,280.13-16,920.11-8,817.02

Finding the Fourth Proportional to 11,280.13, 16,920.11 and 8,817.02

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Solution

The fourth proportional to 11,280.13, 16,920.11 and 8,817.02 is: 13,225.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.13 : 16,920.11 = 8,817.02 : x
  2. Step 2: Convert to fraction form
    11,280.13/16,920.11 = 8,817.02/x
  3. Step 3: Cross multiply
    11,280.13x = 16,920.11 × 8,817.02
  4. Step 4: Simplify right side
    11,280.13x = 149,184,948.27
  5. Step 5: Solve for x
    x = 149,184,948.27/11,280.13
  6. Step 6: Final answer
    x = 13,225.47

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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.