Home / 14,108.80-21,148.80-8,262.40

Finding the Fourth Proportional to 14,108.80, 21,148.80 and 8,262.40

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Solution

The fourth proportional to 14,108.80, 21,148.80 and 8,262.40 is: 12,385.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,108.80 : 21,148.80 = 8,262.40 : x
  2. Step 2: Convert to fraction form
    14,108.80/21,148.80 = 8,262.40/x
  3. Step 3: Cross multiply
    14,108.80x = 21,148.80 × 8,262.40
  4. Step 4: Simplify right side
    14,108.80x = 174,739,845.12
  5. Step 5: Solve for x
    x = 174,739,845.12/14,108.80
  6. Step 6: Final answer
    x = 12,385.17

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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.