Home / 20,179.59-30,270.15-10,307.34

Finding the Fourth Proportional to 20,179.59, 30,270.15 and 10,307.34

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Solution

The fourth proportional to 20,179.59, 30,270.15 and 10,307.34 is: 15,461.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.59 : 30,270.15 = 10,307.34 : x
  2. Step 2: Convert to fraction form
    20,179.59/30,270.15 = 10,307.34/x
  3. Step 3: Cross multiply
    20,179.59x = 30,270.15 × 10,307.34
  4. Step 4: Simplify right side
    20,179.59x = 312,004,727.90
  5. Step 5: Solve for x
    x = 312,004,727.90/20,179.59
  6. Step 6: Final answer
    x = 15,461.40

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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.