Home / 20,497.12-28,277.81-12,525.50

Finding the Fourth Proportional to 20,497.12, 28,277.81 and 12,525.50

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Solution

The fourth proportional to 20,497.12, 28,277.81 and 12,525.50 is: 17,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.12 : 28,277.81 = 12,525.50 : x
  2. Step 2: Convert to fraction form
    20,497.12/28,277.81 = 12,525.50/x
  3. Step 3: Cross multiply
    20,497.12x = 28,277.81 × 12,525.50
  4. Step 4: Simplify right side
    20,497.12x = 354,193,764.19
  5. Step 5: Solve for x
    x = 354,193,764.19/20,497.12
  6. Step 6: Final answer
    x = 17,280.17

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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.