Home / 19,330.97-28,977.93-12,289.16

Finding the Fourth Proportional to 19,330.97, 28,977.93 and 12,289.16

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Solution

The fourth proportional to 19,330.97, 28,977.93 and 12,289.16 is: 18,421.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,330.97 : 28,977.93 = 12,289.16 : x
  2. Step 2: Convert to fraction form
    19,330.97/28,977.93 = 12,289.16/x
  3. Step 3: Cross multiply
    19,330.97x = 28,977.93 × 12,289.16
  4. Step 4: Simplify right side
    19,330.97x = 356,114,490.68
  5. Step 5: Solve for x
    x = 356,114,490.68/19,330.97
  6. Step 6: Final answer
    x = 18,421.97

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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.