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Finding the Fourth Proportional to 28,189.50, 38,901.51 and 17,011.50

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Solution

The fourth proportional to 28,189.50, 38,901.51 and 17,011.50 is: 23,475.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.50 : 38,901.51 = 17,011.50 : x
  2. Step 2: Convert to fraction form
    28,189.50/38,901.51 = 17,011.50/x
  3. Step 3: Cross multiply
    28,189.50x = 38,901.51 × 17,011.50
  4. Step 4: Simplify right side
    28,189.50x = 661,773,037.37
  5. Step 5: Solve for x
    x = 661,773,037.37/28,189.50
  6. Step 6: Final answer
    x = 23,475.87

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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.