Home / 20,745.61-28,632.14-12,248.64

Finding the Fourth Proportional to 20,745.61, 28,632.14 and 12,248.64

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Solution

The fourth proportional to 20,745.61, 28,632.14 and 12,248.64 is: 16,905.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.61 : 28,632.14 = 12,248.64 : x
  2. Step 2: Convert to fraction form
    20,745.61/28,632.14 = 12,248.64/x
  3. Step 3: Cross multiply
    20,745.61x = 28,632.14 × 12,248.64
  4. Step 4: Simplify right side
    20,745.61x = 350,704,775.29
  5. Step 5: Solve for x
    x = 350,704,775.29/20,745.61
  6. Step 6: Final answer
    x = 16,905.01

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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.