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Finding the Fourth Proportional to 18,652.31, 27,970.25 and 9,885.17

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Solution

The fourth proportional to 18,652.31, 27,970.25 and 9,885.17 is: 14,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.31 : 27,970.25 = 9,885.17 : x
  2. Step 2: Convert to fraction form
    18,652.31/27,970.25 = 9,885.17/x
  3. Step 3: Cross multiply
    18,652.31x = 27,970.25 × 9,885.17
  4. Step 4: Simplify right side
    18,652.31x = 276,490,676.19
  5. Step 5: Solve for x
    x = 276,490,676.19/18,652.31
  6. Step 6: Final answer
    x = 14,823.40

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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.