Home / 21,011.76-31,494.96-9,308.88

Finding the Fourth Proportional to 21,011.76, 31,494.96 and 9,308.88

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Solution

The fourth proportional to 21,011.76, 31,494.96 and 9,308.88 is: 13,953.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.76 : 31,494.96 = 9,308.88 : x
  2. Step 2: Convert to fraction form
    21,011.76/31,494.96 = 9,308.88/x
  3. Step 3: Cross multiply
    21,011.76x = 31,494.96 × 9,308.88
  4. Step 4: Simplify right side
    21,011.76x = 293,182,803.24
  5. Step 5: Solve for x
    x = 293,182,803.24/21,011.76
  6. Step 6: Final answer
    x = 13,953.27

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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.