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Finding the Fourth Proportional to 19,480.50, 26,887.95 and 11,101.86

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Solution

The fourth proportional to 19,480.50, 26,887.95 and 11,101.86 is: 15,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,480.50 : 26,887.95 = 11,101.86 : x
  2. Step 2: Convert to fraction form
    19,480.50/26,887.95 = 11,101.86/x
  3. Step 3: Cross multiply
    19,480.50x = 26,887.95 × 11,101.86
  4. Step 4: Simplify right side
    19,480.50x = 298,506,256.59
  5. Step 5: Solve for x
    x = 298,506,256.59/19,480.50
  6. Step 6: Final answer
    x = 15,323.34

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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.