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Finding the Fourth Proportional to 21,869.94, 32,820.84 and 8,726.08

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Solution

The fourth proportional to 21,869.94, 32,820.84 and 8,726.08 is: 13,095.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.94 : 32,820.84 = 8,726.08 : x
  2. Step 2: Convert to fraction form
    21,869.94/32,820.84 = 8,726.08/x
  3. Step 3: Cross multiply
    21,869.94x = 32,820.84 × 8,726.08
  4. Step 4: Simplify right side
    21,869.94x = 286,397,275.51
  5. Step 5: Solve for x
    x = 286,397,275.51/21,869.94
  6. Step 6: Final answer
    x = 13,095.48

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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.