Home / 20,782.74-31,111.04-13,392.48

Finding the Fourth Proportional to 20,782.74, 31,111.04 and 13,392.48

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Solution

The fourth proportional to 20,782.74, 31,111.04 and 13,392.48 is: 20,048.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.74 : 31,111.04 = 13,392.48 : x
  2. Step 2: Convert to fraction form
    20,782.74/31,111.04 = 13,392.48/x
  3. Step 3: Cross multiply
    20,782.74x = 31,111.04 × 13,392.48
  4. Step 4: Simplify right side
    20,782.74x = 416,653,980.98
  5. Step 5: Solve for x
    x = 416,653,980.98/20,782.74
  6. Step 6: Final answer
    x = 20,048.08

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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.