Home / 21,067.24-31,532.28-15,518.40

Finding the Fourth Proportional to 21,067.24, 31,532.28 and 15,518.40

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Solution

The fourth proportional to 21,067.24, 31,532.28 and 15,518.40 is: 23,227.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.24 : 31,532.28 = 15,518.40 : x
  2. Step 2: Convert to fraction form
    21,067.24/31,532.28 = 15,518.40/x
  3. Step 3: Cross multiply
    21,067.24x = 31,532.28 × 15,518.40
  4. Step 4: Simplify right side
    21,067.24x = 489,330,533.95
  5. Step 5: Solve for x
    x = 489,330,533.95/21,067.24
  6. Step 6: Final answer
    x = 23,227.08

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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.