Home / 21,327.43-31,970.49-11,971.93

Finding the Fourth Proportional to 21,327.43, 31,970.49 and 11,971.93

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Solution

The fourth proportional to 21,327.43, 31,970.49 and 11,971.93 is: 17,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.43 : 31,970.49 = 11,971.93 : x
  2. Step 2: Convert to fraction form
    21,327.43/31,970.49 = 11,971.93/x
  3. Step 3: Cross multiply
    21,327.43x = 31,970.49 × 11,971.93
  4. Step 4: Simplify right side
    21,327.43x = 382,748,468.35
  5. Step 5: Solve for x
    x = 382,748,468.35/21,327.43
  6. Step 6: Final answer
    x = 17,946.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.