Home / 21,600.84-32,345.20-18,500.78

Finding the Fourth Proportional to 21,600.84, 32,345.20 and 18,500.78

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Solution

The fourth proportional to 21,600.84, 32,345.20 and 18,500.78 is: 27,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.84 : 32,345.20 = 18,500.78 : x
  2. Step 2: Convert to fraction form
    21,600.84/32,345.20 = 18,500.78/x
  3. Step 3: Cross multiply
    21,600.84x = 32,345.20 × 18,500.78
  4. Step 4: Simplify right side
    21,600.84x = 598,411,429.26
  5. Step 5: Solve for x
    x = 598,411,429.26/21,600.84
  6. Step 6: Final answer
    x = 27,703.16

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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.