Home / 19,702.72-27,180.30-13,331.53

Finding the Fourth Proportional to 19,702.72, 27,180.30 and 13,331.53

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Solution

The fourth proportional to 19,702.72, 27,180.30 and 13,331.53 is: 18,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,702.72 : 27,180.30 = 13,331.53 : x
  2. Step 2: Convert to fraction form
    19,702.72/27,180.30 = 13,331.53/x
  3. Step 3: Cross multiply
    19,702.72x = 27,180.30 × 13,331.53
  4. Step 4: Simplify right side
    19,702.72x = 362,354,984.86
  5. Step 5: Solve for x
    x = 362,354,984.86/19,702.72
  6. Step 6: Final answer
    x = 18,391.11

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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.