Home / 21,029.60-29,011.36-12,074.88

Finding the Fourth Proportional to 21,029.60, 29,011.36 and 12,074.88

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Solution

The fourth proportional to 21,029.60, 29,011.36 and 12,074.88 is: 16,657.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.60 : 29,011.36 = 12,074.88 : x
  2. Step 2: Convert to fraction form
    21,029.60/29,011.36 = 12,074.88/x
  3. Step 3: Cross multiply
    21,029.60x = 29,011.36 × 12,074.88
  4. Step 4: Simplify right side
    21,029.60x = 350,308,690.64
  5. Step 5: Solve for x
    x = 350,308,690.64/21,029.60
  6. Step 6: Final answer
    x = 16,657.89

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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.