Home / 10,221.95-14,100.51-6,438.61

Finding the Fourth Proportional to 10,221.95, 14,100.51 and 6,438.61

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Solution

The fourth proportional to 10,221.95, 14,100.51 and 6,438.61 is: 8,881.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.95 : 14,100.51 = 6,438.61 : x
  2. Step 2: Convert to fraction form
    10,221.95/14,100.51 = 6,438.61/x
  3. Step 3: Cross multiply
    10,221.95x = 14,100.51 × 6,438.61
  4. Step 4: Simplify right side
    10,221.95x = 90,787,684.69
  5. Step 5: Solve for x
    x = 90,787,684.69/10,221.95
  6. Step 6: Final answer
    x = 8,881.64

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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.