Home / 12,687,612.64-17,508,861.12-6,886,394.08

Finding the Fourth Proportional to 12,687,612.64, 17,508,861.12 and 6,886,394.08

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Solution

The fourth proportional to 12,687,612.64, 17,508,861.12 and 6,886,394.08 is: 9,503,199.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687,612.64 : 17,508,861.12 = 6,886,394.08 : x
  2. Step 2: Convert to fraction form
    12,687,612.64/17,508,861.12 = 6,886,394.08/x
  3. Step 3: Cross multiply
    12,687,612.64x = 17,508,861.12 × 6,886,394.08
  4. Step 4: Simplify right side
    12,687,612.64x = 120,572,917,564,310.17
  5. Step 5: Solve for x
    x = 120,572,917,564,310.17/12,687,612.64
  6. Step 6: Final answer
    x = 9,503,199.77

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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.