Home / 14,122.30-21,159.15-9,189.40

Finding the Fourth Proportional to 14,122.30, 21,159.15 and 9,189.40

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Solution

The fourth proportional to 14,122.30, 21,159.15 and 9,189.40 is: 13,768.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.30 : 21,159.15 = 9,189.40 : x
  2. Step 2: Convert to fraction form
    14,122.30/21,159.15 = 9,189.40/x
  3. Step 3: Cross multiply
    14,122.30x = 21,159.15 × 9,189.40
  4. Step 4: Simplify right side
    14,122.30x = 194,439,893.01
  5. Step 5: Solve for x
    x = 194,439,893.01/14,122.30
  6. Step 6: Final answer
    x = 13,768.29

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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.