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Finding the Fourth Proportional to 26,827.20, 40,208.40 and 13,672.80

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Solution

The fourth proportional to 26,827.20, 40,208.40 and 13,672.80 is: 20,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,827.20 : 40,208.40 = 13,672.80 : x
  2. Step 2: Convert to fraction form
    26,827.20/40,208.40 = 13,672.80/x
  3. Step 3: Cross multiply
    26,827.20x = 40,208.40 × 13,672.80
  4. Step 4: Simplify right side
    26,827.20x = 549,761,411.52
  5. Step 5: Solve for x
    x = 549,761,411.52/26,827.20
  6. Step 6: Final answer
    x = 20,492.69

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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.