Home / 15,550.04-21,461.20-8,838.40

Finding the Fourth Proportional to 15,550.04, 21,461.20 and 8,838.40

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Solution

The fourth proportional to 15,550.04, 21,461.20 and 8,838.40 is: 12,198.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.04 : 21,461.20 = 8,838.40 : x
  2. Step 2: Convert to fraction form
    15,550.04/21,461.20 = 8,838.40/x
  3. Step 3: Cross multiply
    15,550.04x = 21,461.20 × 8,838.40
  4. Step 4: Simplify right side
    15,550.04x = 189,682,670.08
  5. Step 5: Solve for x
    x = 189,682,670.08/15,550.04
  6. Step 6: Final answer
    x = 12,198.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.