Home / 20,301-28,018.08-11,917.50

Finding the Fourth Proportional to 20,301, 28,018.08 and 11,917.50

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Solution

The fourth proportional to 20,301, 28,018.08 and 11,917.50 is: 16,447.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301 : 28,018.08 = 11,917.50 : x
  2. Step 2: Convert to fraction form
    20,301/28,018.08 = 11,917.50/x
  3. Step 3: Cross multiply
    20,301x = 28,018.08 × 11,917.50
  4. Step 4: Simplify right side
    20,301x = 333,905,468.40
  5. Step 5: Solve for x
    x = 333,905,468.40/20,301
  6. Step 6: Final answer
    x = 16,447.74

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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.