Home / 20,560.31-30,827.09-8,081.55

Finding the Fourth Proportional to 20,560.31, 30,827.09 and 8,081.55

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Solution

The fourth proportional to 20,560.31, 30,827.09 and 8,081.55 is: 12,117.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.31 : 30,827.09 = 8,081.55 : x
  2. Step 2: Convert to fraction form
    20,560.31/30,827.09 = 8,081.55/x
  3. Step 3: Cross multiply
    20,560.31x = 30,827.09 × 8,081.55
  4. Step 4: Simplify right side
    20,560.31x = 249,130,689.39
  5. Step 5: Solve for x
    x = 249,130,689.39/20,560.31
  6. Step 6: Final answer
    x = 12,117.07

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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.