Home / 21,267.63-29,300.20-15,288.95

Finding the Fourth Proportional to 21,267.63, 29,300.20 and 15,288.95

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Solution

The fourth proportional to 21,267.63, 29,300.20 and 15,288.95 is: 21,063.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.63 : 29,300.20 = 15,288.95 : x
  2. Step 2: Convert to fraction form
    21,267.63/29,300.20 = 15,288.95/x
  3. Step 3: Cross multiply
    21,267.63x = 29,300.20 × 15,288.95
  4. Step 4: Simplify right side
    21,267.63x = 447,969,327.82
  5. Step 5: Solve for x
    x = 447,969,327.82/21,267.63
  6. Step 6: Final answer
    x = 21,063.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.