Home / 21,275.79-29,360.70-11,844.35

Finding the Fourth Proportional to 21,275.79, 29,360.70 and 11,844.35

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Solution

The fourth proportional to 21,275.79, 29,360.70 and 11,844.35 is: 16,345.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.79 : 29,360.70 = 11,844.35 : x
  2. Step 2: Convert to fraction form
    21,275.79/29,360.70 = 11,844.35/x
  3. Step 3: Cross multiply
    21,275.79x = 29,360.70 × 11,844.35
  4. Step 4: Simplify right side
    21,275.79x = 347,758,486.23
  5. Step 5: Solve for x
    x = 347,758,486.23/21,275.79
  6. Step 6: Final answer
    x = 16,345.27

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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.