Home / 19,541.40-29,312.10-6,390.60

Finding the Fourth Proportional to 19,541.40, 29,312.10 and 6,390.60

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Solution

The fourth proportional to 19,541.40, 29,312.10 and 6,390.60 is: 9,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,541.40 : 29,312.10 = 6,390.60 : x
  2. Step 2: Convert to fraction form
    19,541.40/29,312.10 = 6,390.60/x
  3. Step 3: Cross multiply
    19,541.40x = 29,312.10 × 6,390.60
  4. Step 4: Simplify right side
    19,541.40x = 187,321,906.26
  5. Step 5: Solve for x
    x = 187,321,906.26/19,541.40
  6. Step 6: Final answer
    x = 9,585.90

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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.