Home / 31,860.20-47,788.77-13,139.93

Finding the Fourth Proportional to 31,860.20, 47,788.77 and 13,139.93

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Solution

The fourth proportional to 31,860.20, 47,788.77 and 13,139.93 is: 19,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,860.20 : 47,788.77 = 13,139.93 : x
  2. Step 2: Convert to fraction form
    31,860.20/47,788.77 = 13,139.93/x
  3. Step 3: Cross multiply
    31,860.20x = 47,788.77 × 13,139.93
  4. Step 4: Simplify right side
    31,860.20x = 627,941,092.59
  5. Step 5: Solve for x
    x = 627,941,092.59/31,860.20
  6. Step 6: Final answer
    x = 19,709.26

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1.5x scale

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.