Home / 14,155.20-21,242.04-5,390.19

Finding the Fourth Proportional to 14,155.20, 21,242.04 and 5,390.19

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Solution

The fourth proportional to 14,155.20, 21,242.04 and 5,390.19 is: 8,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,155.20 : 21,242.04 = 5,390.19 : x
  2. Step 2: Convert to fraction form
    14,155.20/21,242.04 = 5,390.19/x
  3. Step 3: Cross multiply
    14,155.20x = 21,242.04 × 5,390.19
  4. Step 4: Simplify right side
    14,155.20x = 114,498,631.59
  5. Step 5: Solve for x
    x = 114,498,631.59/14,155.20
  6. Step 6: Final answer
    x = 8,088.80

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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.