Home / 13,209.20-19,807.40-7,359.60

Finding the Fourth Proportional to 13,209.20, 19,807.40 and 7,359.60

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Solution

The fourth proportional to 13,209.20, 19,807.40 and 7,359.60 is: 11,035.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.20 : 19,807.40 = 7,359.60 : x
  2. Step 2: Convert to fraction form
    13,209.20/19,807.40 = 7,359.60/x
  3. Step 3: Cross multiply
    13,209.20x = 19,807.40 × 7,359.60
  4. Step 4: Simplify right side
    13,209.20x = 145,774,541.04
  5. Step 5: Solve for x
    x = 145,774,541.04/13,209.20
  6. Step 6: Final answer
    x = 11,035.83

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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.