Home / 12,539.53-18,820.95-6,620.86

Finding the Fourth Proportional to 12,539.53, 18,820.95 and 6,620.86

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Solution

The fourth proportional to 12,539.53, 18,820.95 and 6,620.86 is: 9,937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.53 : 18,820.95 = 6,620.86 : x
  2. Step 2: Convert to fraction form
    12,539.53/18,820.95 = 6,620.86/x
  3. Step 3: Cross multiply
    12,539.53x = 18,820.95 × 6,620.86
  4. Step 4: Simplify right side
    12,539.53x = 124,610,875.02
  5. Step 5: Solve for x
    x = 124,610,875.02/12,539.53
  6. Step 6: Final answer
    x = 9,937.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.