Home / 20,943.59-31,407.12-8,461.26

Finding the Fourth Proportional to 20,943.59, 31,407.12 and 8,461.26

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Solution

The fourth proportional to 20,943.59, 31,407.12 and 8,461.26 is: 12,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.59 : 31,407.12 = 8,461.26 : x
  2. Step 2: Convert to fraction form
    20,943.59/31,407.12 = 8,461.26/x
  3. Step 3: Cross multiply
    20,943.59x = 31,407.12 × 8,461.26
  4. Step 4: Simplify right side
    20,943.59x = 265,743,808.17
  5. Step 5: Solve for x
    x = 265,743,808.17/20,943.59
  6. Step 6: Final answer
    x = 12,688.55

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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.