Home / 28,197.79-38,913.33-15,450.71

Finding the Fourth Proportional to 28,197.79, 38,913.33 and 15,450.71

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Solution

The fourth proportional to 28,197.79, 38,913.33 and 15,450.71 is: 21,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.79 : 38,913.33 = 15,450.71 : x
  2. Step 2: Convert to fraction form
    28,197.79/38,913.33 = 15,450.71/x
  3. Step 3: Cross multiply
    28,197.79x = 38,913.33 × 15,450.71
  4. Step 4: Simplify right side
    28,197.79x = 601,238,684.26
  5. Step 5: Solve for x
    x = 601,238,684.26/28,197.79
  6. Step 6: Final answer
    x = 21,322.20

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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.