Home / 20,938.16-28,881.84-12,434.52

Finding the Fourth Proportional to 20,938.16, 28,881.84 and 12,434.52

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Solution

The fourth proportional to 20,938.16, 28,881.84 and 12,434.52 is: 17,152.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.16 : 28,881.84 = 12,434.52 : x
  2. Step 2: Convert to fraction form
    20,938.16/28,881.84 = 12,434.52/x
  3. Step 3: Cross multiply
    20,938.16x = 28,881.84 × 12,434.52
  4. Step 4: Simplify right side
    20,938.16x = 359,131,817.12
  5. Step 5: Solve for x
    x = 359,131,817.12/20,938.16
  6. Step 6: Final answer
    x = 17,152.02

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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.