Home / 28,938.45-39,953.01-22,211.20

Finding the Fourth Proportional to 28,938.45, 39,953.01 and 22,211.20

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Solution

The fourth proportional to 28,938.45, 39,953.01 and 22,211.20 is: 30,665.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938.45 : 39,953.01 = 22,211.20 : x
  2. Step 2: Convert to fraction form
    28,938.45/39,953.01 = 22,211.20/x
  3. Step 3: Cross multiply
    28,938.45x = 39,953.01 × 22,211.20
  4. Step 4: Simplify right side
    28,938.45x = 887,404,295.71
  5. Step 5: Solve for x
    x = 887,404,295.71/28,938.45
  6. Step 6: Final answer
    x = 30,665.23

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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.