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Finding the Fourth Proportional to 18,475, 25,495.64 and 10,091.50

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Solution

The fourth proportional to 18,475, 25,495.64 and 10,091.50 is: 13,926.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,475 : 25,495.64 = 10,091.50 : x
  2. Step 2: Convert to fraction form
    18,475/25,495.64 = 10,091.50/x
  3. Step 3: Cross multiply
    18,475x = 25,495.64 × 10,091.50
  4. Step 4: Simplify right side
    18,475x = 257,289,251.06
  5. Step 5: Solve for x
    x = 257,289,251.06/18,475
  6. Step 6: Final answer
    x = 13,926.35

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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.