Home / 21,285.81-29,376.72-11,726.68

Finding the Fourth Proportional to 21,285.81, 29,376.72 and 11,726.68

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Solution

The fourth proportional to 21,285.81, 29,376.72 and 11,726.68 is: 16,184.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.81 : 29,376.72 = 11,726.68 : x
  2. Step 2: Convert to fraction form
    21,285.81/29,376.72 = 11,726.68/x
  3. Step 3: Cross multiply
    21,285.81x = 29,376.72 × 11,726.68
  4. Step 4: Simplify right side
    21,285.81x = 344,491,248.01
  5. Step 5: Solve for x
    x = 344,491,248.01/21,285.81
  6. Step 6: Final answer
    x = 16,184.08

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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.