Home / 20,225.10-30,330.45-9,137.10

Finding the Fourth Proportional to 20,225.10, 30,330.45 and 9,137.10

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Solution

The fourth proportional to 20,225.10, 30,330.45 and 9,137.10 is: 13,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.10 : 30,330.45 = 9,137.10 : x
  2. Step 2: Convert to fraction form
    20,225.10/30,330.45 = 9,137.10/x
  3. Step 3: Cross multiply
    20,225.10x = 30,330.45 × 9,137.10
  4. Step 4: Simplify right side
    20,225.10x = 277,132,354.70
  5. Step 5: Solve for x
    x = 277,132,354.70/20,225.10
  6. Step 6: Final answer
    x = 13,702.40

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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.