Home / 19,902.20-29,877.60-19,756.40

Finding the Fourth Proportional to 19,902.20, 29,877.60 and 19,756.40

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Solution

The fourth proportional to 19,902.20, 29,877.60 and 19,756.40 is: 29,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.20 : 29,877.60 = 19,756.40 : x
  2. Step 2: Convert to fraction form
    19,902.20/29,877.60 = 19,756.40/x
  3. Step 3: Cross multiply
    19,902.20x = 29,877.60 × 19,756.40
  4. Step 4: Simplify right side
    19,902.20x = 590,273,816.64
  5. Step 5: Solve for x
    x = 590,273,816.64/19,902.20
  6. Step 6: Final answer
    x = 29,658.72

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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.