Home / 12,899.61-19,349.43-3,539.76

Finding the Fourth Proportional to 12,899.61, 19,349.43 and 3,539.76

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Solution

The fourth proportional to 12,899.61, 19,349.43 and 3,539.76 is: 5,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.61 : 19,349.43 = 3,539.76 : x
  2. Step 2: Convert to fraction form
    12,899.61/19,349.43 = 3,539.76/x
  3. Step 3: Cross multiply
    12,899.61x = 19,349.43 × 3,539.76
  4. Step 4: Simplify right side
    12,899.61x = 68,492,254.86
  5. Step 5: Solve for x
    x = 68,492,254.86/12,899.61
  6. Step 6: Final answer
    x = 5,309.64

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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.