Home / 21,724.80-29,980.08-12,293.16

Finding the Fourth Proportional to 21,724.80, 29,980.08 and 12,293.16

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Solution

The fourth proportional to 21,724.80, 29,980.08 and 12,293.16 is: 16,964.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.80 : 29,980.08 = 12,293.16 : x
  2. Step 2: Convert to fraction form
    21,724.80/29,980.08 = 12,293.16/x
  3. Step 3: Cross multiply
    21,724.80x = 29,980.08 × 12,293.16
  4. Step 4: Simplify right side
    21,724.80x = 368,549,920.25
  5. Step 5: Solve for x
    x = 368,549,920.25/21,724.80
  6. Step 6: Final answer
    x = 16,964.48

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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.