Home / 11,223.60-16,835.40-7,281.20

Finding the Fourth Proportional to 11,223.60, 16,835.40 and 7,281.20

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Solution

The fourth proportional to 11,223.60, 16,835.40 and 7,281.20 is: 10,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,223.60 : 16,835.40 = 7,281.20 : x
  2. Step 2: Convert to fraction form
    11,223.60/16,835.40 = 7,281.20/x
  3. Step 3: Cross multiply
    11,223.60x = 16,835.40 × 7,281.20
  4. Step 4: Simplify right side
    11,223.60x = 122,581,914.48
  5. Step 5: Solve for x
    x = 122,581,914.48/11,223.60
  6. Step 6: Final answer
    x = 10,921.80

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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.