Home / 11,280.40-16,928.70-4,711.30

Finding the Fourth Proportional to 11,280.40, 16,928.70 and 4,711.30

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Solution

The fourth proportional to 11,280.40, 16,928.70 and 4,711.30 is: 7,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.40 : 16,928.70 = 4,711.30 : x
  2. Step 2: Convert to fraction form
    11,280.40/16,928.70 = 4,711.30/x
  3. Step 3: Cross multiply
    11,280.40x = 16,928.70 × 4,711.30
  4. Step 4: Simplify right side
    11,280.40x = 79,756,184.31
  5. Step 5: Solve for x
    x = 79,756,184.31/11,280.40
  6. Step 6: Final answer
    x = 7,070.33

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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.