Home / 21,374.17-29,497.48-12,878.96

Finding the Fourth Proportional to 21,374.17, 29,497.48 and 12,878.96

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Solution

The fourth proportional to 21,374.17, 29,497.48 and 12,878.96 is: 17,773.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.17 : 29,497.48 = 12,878.96 : x
  2. Step 2: Convert to fraction form
    21,374.17/29,497.48 = 12,878.96/x
  3. Step 3: Cross multiply
    21,374.17x = 29,497.48 × 12,878.96
  4. Step 4: Simplify right side
    21,374.17x = 379,896,865.02
  5. Step 5: Solve for x
    x = 379,896,865.02/21,374.17
  6. Step 6: Final answer
    x = 17,773.64

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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.