Home / 27,638.18-38,140.83-15,702.18

Finding the Fourth Proportional to 27,638.18, 38,140.83 and 15,702.18

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Solution

The fourth proportional to 27,638.18, 38,140.83 and 15,702.18 is: 21,669.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.18 : 38,140.83 = 15,702.18 : x
  2. Step 2: Convert to fraction form
    27,638.18/38,140.83 = 15,702.18/x
  3. Step 3: Cross multiply
    27,638.18x = 38,140.83 × 15,702.18
  4. Step 4: Simplify right side
    27,638.18x = 598,894,099.50
  5. Step 5: Solve for x
    x = 598,894,099.50/27,638.18
  6. Step 6: Final answer
    x = 21,669.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.