Home / 13,702.48-20,553.40-7,854.80

Finding the Fourth Proportional to 13,702.48, 20,553.40 and 7,854.80

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Solution

The fourth proportional to 13,702.48, 20,553.40 and 7,854.80 is: 11,782.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.48 : 20,553.40 = 7,854.80 : x
  2. Step 2: Convert to fraction form
    13,702.48/20,553.40 = 7,854.80/x
  3. Step 3: Cross multiply
    13,702.48x = 20,553.40 × 7,854.80
  4. Step 4: Simplify right side
    13,702.48x = 161,442,846.32
  5. Step 5: Solve for x
    x = 161,442,846.32/13,702.48
  6. Step 6: Final answer
    x = 11,782.02

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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.