Home / 21,564.14-29,756.90-12,130.88

Finding the Fourth Proportional to 21,564.14, 29,756.90 and 12,130.88

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Solution

The fourth proportional to 21,564.14, 29,756.90 and 12,130.88 is: 16,739.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.14 : 29,756.90 = 12,130.88 : x
  2. Step 2: Convert to fraction form
    21,564.14/29,756.90 = 12,130.88/x
  3. Step 3: Cross multiply
    21,564.14x = 29,756.90 × 12,130.88
  4. Step 4: Simplify right side
    21,564.14x = 360,977,264.61
  5. Step 5: Solve for x
    x = 360,977,264.61/21,564.14
  6. Step 6: Final answer
    x = 16,739.71

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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.