Home / 21,275.61-29,359.18-11,713.63

Finding the Fourth Proportional to 21,275.61, 29,359.18 and 11,713.63

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Solution

The fourth proportional to 21,275.61, 29,359.18 and 11,713.63 is: 16,164.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.61 : 29,359.18 = 11,713.63 : x
  2. Step 2: Convert to fraction form
    21,275.61/29,359.18 = 11,713.63/x
  3. Step 3: Cross multiply
    21,275.61x = 29,359.18 × 11,713.63
  4. Step 4: Simplify right side
    21,275.61x = 343,902,571.62
  5. Step 5: Solve for x
    x = 343,902,571.62/21,275.61
  6. Step 6: Final answer
    x = 16,164.17

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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.