Home / 38,543.60-57,772.20-19,816.40

Finding the Fourth Proportional to 38,543.60, 57,772.20 and 19,816.40

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Solution

The fourth proportional to 38,543.60, 57,772.20 and 19,816.40 is: 29,702.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,543.60 : 57,772.20 = 19,816.40 : x
  2. Step 2: Convert to fraction form
    38,543.60/57,772.20 = 19,816.40/x
  3. Step 3: Cross multiply
    38,543.60x = 57,772.20 × 19,816.40
  4. Step 4: Simplify right side
    38,543.60x = 1,144,837,024.08
  5. Step 5: Solve for x
    x = 1,144,837,024.08/38,543.60
  6. Step 6: Final answer
    x = 29,702.39

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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.