Home / 21,335.77-31,973.15-15,668.99

Finding the Fourth Proportional to 21,335.77, 31,973.15 and 15,668.99

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Solution

The fourth proportional to 21,335.77, 31,973.15 and 15,668.99 is: 23,481.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.77 : 31,973.15 = 15,668.99 : x
  2. Step 2: Convert to fraction form
    21,335.77/31,973.15 = 15,668.99/x
  3. Step 3: Cross multiply
    21,335.77x = 31,973.15 × 15,668.99
  4. Step 4: Simplify right side
    21,335.77x = 500,986,967.62
  5. Step 5: Solve for x
    x = 500,986,967.62/21,335.77
  6. Step 6: Final answer
    x = 23,481.08

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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.