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Finding the Fourth Proportional to 21,784.68, 32,676.98 and 15,223.68

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Solution

The fourth proportional to 21,784.68, 32,676.98 and 15,223.68 is: 22,835.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.68 : 32,676.98 = 15,223.68 : x
  2. Step 2: Convert to fraction form
    21,784.68/32,676.98 = 15,223.68/x
  3. Step 3: Cross multiply
    21,784.68x = 32,676.98 × 15,223.68
  4. Step 4: Simplify right side
    21,784.68x = 497,463,886.89
  5. Step 5: Solve for x
    x = 497,463,886.89/21,784.68
  6. Step 6: Final answer
    x = 22,835.49

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Similar ratio
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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.