Home / 31,719.09-47,578.63-13,238.13

Finding the Fourth Proportional to 31,719.09, 47,578.63 and 13,238.13

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Solution

The fourth proportional to 31,719.09, 47,578.63 and 13,238.13 is: 19,857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.09 : 47,578.63 = 13,238.13 : x
  2. Step 2: Convert to fraction form
    31,719.09/47,578.63 = 13,238.13/x
  3. Step 3: Cross multiply
    31,719.09x = 47,578.63 × 13,238.13
  4. Step 4: Simplify right side
    31,719.09x = 629,851,851.27
  5. Step 5: Solve for x
    x = 629,851,851.27/31,719.09
  6. Step 6: Final answer
    x = 19,857.19

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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.