Home / 20,255.79-30,397.02-7,107.82

Finding the Fourth Proportional to 20,255.79, 30,397.02 and 7,107.82

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Solution

The fourth proportional to 20,255.79, 30,397.02 and 7,107.82 is: 10,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.79 : 30,397.02 = 7,107.82 : x
  2. Step 2: Convert to fraction form
    20,255.79/30,397.02 = 7,107.82/x
  3. Step 3: Cross multiply
    20,255.79x = 30,397.02 × 7,107.82
  4. Step 4: Simplify right side
    20,255.79x = 216,056,444.05
  5. Step 5: Solve for x
    x = 216,056,444.05/20,255.79
  6. Step 6: Final answer
    x = 10,666.40

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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.