Home / 19,702.18-27,199.02-15,215.86

Finding the Fourth Proportional to 19,702.18, 27,199.02 and 15,215.86

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Solution

The fourth proportional to 19,702.18, 27,199.02 and 15,215.86 is: 21,005.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,702.18 : 27,199.02 = 15,215.86 : x
  2. Step 2: Convert to fraction form
    19,702.18/27,199.02 = 15,215.86/x
  3. Step 3: Cross multiply
    19,702.18x = 27,199.02 × 15,215.86
  4. Step 4: Simplify right side
    19,702.18x = 413,856,480.46
  5. Step 5: Solve for x
    x = 413,856,480.46/19,702.18
  6. Step 6: Final answer
    x = 21,005.62

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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.