Home / 28,099.71-42,135.51-15,628.35

Finding the Fourth Proportional to 28,099.71, 42,135.51 and 15,628.35

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Solution

The fourth proportional to 28,099.71, 42,135.51 and 15,628.35 is: 23,434.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.71 : 42,135.51 = 15,628.35 : x
  2. Step 2: Convert to fraction form
    28,099.71/42,135.51 = 15,628.35/x
  3. Step 3: Cross multiply
    28,099.71x = 42,135.51 × 15,628.35
  4. Step 4: Simplify right side
    28,099.71x = 658,508,497.71
  5. Step 5: Solve for x
    x = 658,508,497.71/28,099.71
  6. Step 6: Final answer
    x = 23,434.71

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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.