Home / 21,971.71-30,326.39-12,545.74

Finding the Fourth Proportional to 21,971.71, 30,326.39 and 12,545.74

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Solution

The fourth proportional to 21,971.71, 30,326.39 and 12,545.74 is: 17,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.71 : 30,326.39 = 12,545.74 : x
  2. Step 2: Convert to fraction form
    21,971.71/30,326.39 = 12,545.74/x
  3. Step 3: Cross multiply
    21,971.71x = 30,326.39 × 12,545.74
  4. Step 4: Simplify right side
    21,971.71x = 380,467,004.08
  5. Step 5: Solve for x
    x = 380,467,004.08/21,971.71
  6. Step 6: Final answer
    x = 17,316.22

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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.