Home / 12,639.17-18,965.12-6,070.88

Finding the Fourth Proportional to 12,639.17, 18,965.12 and 6,070.88

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Solution

The fourth proportional to 12,639.17, 18,965.12 and 6,070.88 is: 9,109.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.17 : 18,965.12 = 6,070.88 : x
  2. Step 2: Convert to fraction form
    12,639.17/18,965.12 = 6,070.88/x
  3. Step 3: Cross multiply
    12,639.17x = 18,965.12 × 6,070.88
  4. Step 4: Simplify right side
    12,639.17x = 115,134,984.76
  5. Step 5: Solve for x
    x = 115,134,984.76/12,639.17
  6. Step 6: Final answer
    x = 9,109.38

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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.