Home / 25,690.77-38,512.81-9,885.72

Finding the Fourth Proportional to 25,690.77, 38,512.81 and 9,885.72

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Solution

The fourth proportional to 25,690.77, 38,512.81 and 9,885.72 is: 14,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,690.77 : 38,512.81 = 9,885.72 : x
  2. Step 2: Convert to fraction form
    25,690.77/38,512.81 = 9,885.72/x
  3. Step 3: Cross multiply
    25,690.77x = 38,512.81 × 9,885.72
  4. Step 4: Simplify right side
    25,690.77x = 380,726,856.07
  5. Step 5: Solve for x
    x = 380,726,856.07/25,690.77
  6. Step 6: Final answer
    x = 14,819.60

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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.