Home / 21,491.04-29,655.64-12,057.76

Finding the Fourth Proportional to 21,491.04, 29,655.64 and 12,057.76

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Solution

The fourth proportional to 21,491.04, 29,655.64 and 12,057.76 is: 16,638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.04 : 29,655.64 = 12,057.76 : x
  2. Step 2: Convert to fraction form
    21,491.04/29,655.64 = 12,057.76/x
  3. Step 3: Cross multiply
    21,491.04x = 29,655.64 × 12,057.76
  4. Step 4: Simplify right side
    21,491.04x = 357,580,589.77
  5. Step 5: Solve for x
    x = 357,580,589.77/21,491.04
  6. Step 6: Final answer
    x = 16,638.59

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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.