Home / 21,326.43-31,968.99-11,970.93

Finding the Fourth Proportional to 21,326.43, 31,968.99 and 11,970.93

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Solution

The fourth proportional to 21,326.43, 31,968.99 and 11,970.93 is: 17,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.43 : 31,968.99 = 11,970.93 : x
  2. Step 2: Convert to fraction form
    21,326.43/31,968.99 = 11,970.93/x
  3. Step 3: Cross multiply
    21,326.43x = 31,968.99 × 11,970.93
  4. Step 4: Simplify right side
    21,326.43x = 382,698,541.46
  5. Step 5: Solve for x
    x = 382,698,541.46/21,326.43
  6. Step 6: Final answer
    x = 17,944.80

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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.