Home / 21,840.42-32,762.83-8,689.74

Finding the Fourth Proportional to 21,840.42, 32,762.83 and 8,689.74

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Solution

The fourth proportional to 21,840.42, 32,762.83 and 8,689.74 is: 13,035.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,840.42 : 32,762.83 = 8,689.74 : x
  2. Step 2: Convert to fraction form
    21,840.42/32,762.83 = 8,689.74/x
  3. Step 3: Cross multiply
    21,840.42x = 32,762.83 × 8,689.74
  4. Step 4: Simplify right side
    21,840.42x = 284,700,474.36
  5. Step 5: Solve for x
    x = 284,700,474.36/21,840.42
  6. Step 6: Final answer
    x = 13,035.49

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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.