Home / 14,421.90-21,632.85-8,857.20

Finding the Fourth Proportional to 14,421.90, 21,632.85 and 8,857.20

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Solution

The fourth proportional to 14,421.90, 21,632.85 and 8,857.20 is: 13,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.90 : 21,632.85 = 8,857.20 : x
  2. Step 2: Convert to fraction form
    14,421.90/21,632.85 = 8,857.20/x
  3. Step 3: Cross multiply
    14,421.90x = 21,632.85 × 8,857.20
  4. Step 4: Simplify right side
    14,421.90x = 191,606,479.02
  5. Step 5: Solve for x
    x = 191,606,479.02/14,421.90
  6. Step 6: Final answer
    x = 13,285.80

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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.