Home / 20,987.51-31,467.29-14,326.07

Finding the Fourth Proportional to 20,987.51, 31,467.29 and 14,326.07

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Solution

The fourth proportional to 20,987.51, 31,467.29 and 14,326.07 is: 21,479.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.51 : 31,467.29 = 14,326.07 : x
  2. Step 2: Convert to fraction form
    20,987.51/31,467.29 = 14,326.07/x
  3. Step 3: Cross multiply
    20,987.51x = 31,467.29 × 14,326.07
  4. Step 4: Simplify right side
    20,987.51x = 450,802,370.28
  5. Step 5: Solve for x
    x = 450,802,370.28/20,987.51
  6. Step 6: Final answer
    x = 21,479.56

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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.