Home / 21,724.74-29,980.53-12,295.26

Finding the Fourth Proportional to 21,724.74, 29,980.53 and 12,295.26

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Solution

The fourth proportional to 21,724.74, 29,980.53 and 12,295.26 is: 16,967.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.74 : 29,980.53 = 12,295.26 : x
  2. Step 2: Convert to fraction form
    21,724.74/29,980.53 = 12,295.26/x
  3. Step 3: Cross multiply
    21,724.74x = 29,980.53 × 12,295.26
  4. Step 4: Simplify right side
    21,724.74x = 368,618,411.29
  5. Step 5: Solve for x
    x = 368,618,411.29/21,724.74
  6. Step 6: Final answer
    x = 16,967.68

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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.