Home / 31,430.90-43,373-17,281.02

Finding the Fourth Proportional to 31,430.90, 43,373 and 17,281.02

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Solution

The fourth proportional to 31,430.90, 43,373 and 17,281.02 is: 23,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.90 : 43,373 = 17,281.02 : x
  2. Step 2: Convert to fraction form
    31,430.90/43,373 = 17,281.02/x
  3. Step 3: Cross multiply
    31,430.90x = 43,373 × 17,281.02
  4. Step 4: Simplify right side
    31,430.90x = 749,529,680.46
  5. Step 5: Solve for x
    x = 749,529,680.46/31,430.90
  6. Step 6: Final answer
    x = 23,846.90

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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.