Home / 18,701.50-25,808.55-10,203.76

Finding the Fourth Proportional to 18,701.50, 25,808.55 and 10,203.76

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Solution

The fourth proportional to 18,701.50, 25,808.55 and 10,203.76 is: 14,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.50 : 25,808.55 = 10,203.76 : x
  2. Step 2: Convert to fraction form
    18,701.50/25,808.55 = 10,203.76/x
  3. Step 3: Cross multiply
    18,701.50x = 25,808.55 × 10,203.76
  4. Step 4: Simplify right side
    18,701.50x = 263,344,250.15
  5. Step 5: Solve for x
    x = 263,344,250.15/18,701.50
  6. Step 6: Final answer
    x = 14,081.45

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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.