Home / 31,825.20-47,754-13,119.60

Finding the Fourth Proportional to 31,825.20, 47,754 and 13,119.60

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Solution

The fourth proportional to 31,825.20, 47,754 and 13,119.60 is: 19,686.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,825.20 : 47,754 = 13,119.60 : x
  2. Step 2: Convert to fraction form
    31,825.20/47,754 = 13,119.60/x
  3. Step 3: Cross multiply
    31,825.20x = 47,754 × 13,119.60
  4. Step 4: Simplify right side
    31,825.20x = 626,513,378.40
  5. Step 5: Solve for x
    x = 626,513,378.40/31,825.20
  6. Step 6: Final answer
    x = 19,686.08

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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.