Home / 18,461.31-27,688.85-5,310.63

Finding the Fourth Proportional to 18,461.31, 27,688.85 and 5,310.63

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Solution

The fourth proportional to 18,461.31, 27,688.85 and 5,310.63 is: 7,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.31 : 27,688.85 = 5,310.63 : x
  2. Step 2: Convert to fraction form
    18,461.31/27,688.85 = 5,310.63/x
  3. Step 3: Cross multiply
    18,461.31x = 27,688.85 × 5,310.63
  4. Step 4: Simplify right side
    18,461.31x = 147,045,237.48
  5. Step 5: Solve for x
    x = 147,045,237.48/18,461.31
  6. Step 6: Final answer
    x = 7,965.05

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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.