Home / 31,430.23-47,112.54-11,700.75

Finding the Fourth Proportional to 31,430.23, 47,112.54 and 11,700.75

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Solution

The fourth proportional to 31,430.23, 47,112.54 and 11,700.75 is: 17,538.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.23 : 47,112.54 = 11,700.75 : x
  2. Step 2: Convert to fraction form
    31,430.23/47,112.54 = 11,700.75/x
  3. Step 3: Cross multiply
    31,430.23x = 47,112.54 × 11,700.75
  4. Step 4: Simplify right side
    31,430.23x = 551,252,185.20
  5. Step 5: Solve for x
    x = 551,252,185.20/31,430.23
  6. Step 6: Final answer
    x = 17,538.92

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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.