Home / 10,920.80-16,353.40-7,217.48

Finding the Fourth Proportional to 10,920.80, 16,353.40 and 7,217.48

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Solution

The fourth proportional to 10,920.80, 16,353.40 and 7,217.48 is: 10,807.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.80 : 16,353.40 = 7,217.48 : x
  2. Step 2: Convert to fraction form
    10,920.80/16,353.40 = 7,217.48/x
  3. Step 3: Cross multiply
    10,920.80x = 16,353.40 × 7,217.48
  4. Step 4: Simplify right side
    10,920.80x = 118,030,237.62
  5. Step 5: Solve for x
    x = 118,030,237.62/10,920.80
  6. Step 6: Final answer
    x = 10,807.84

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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.