Home / 20,938.07-31,411.37-18,846.86

Finding the Fourth Proportional to 20,938.07, 31,411.37 and 18,846.86

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Solution

The fourth proportional to 20,938.07, 31,411.37 and 18,846.86 is: 28,274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.07 : 31,411.37 = 18,846.86 : x
  2. Step 2: Convert to fraction form
    20,938.07/31,411.37 = 18,846.86/x
  3. Step 3: Cross multiply
    20,938.07x = 31,411.37 × 18,846.86
  4. Step 4: Simplify right side
    20,938.07x = 592,005,598.56
  5. Step 5: Solve for x
    x = 592,005,598.56/20,938.07
  6. Step 6: Final answer
    x = 28,274.12

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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.